標題:
方程 好難丫 教我
發問:
16-7分之t = 6 驗算:_________________ ________________________________ ________________________________ ________________________________ __________________________________ ... 顯示更多 16-7分之t = 6 驗算: _________________ _______________ _________________ _______________ _________________ _______________ _________________ ________________ __________________ ________________ _________________ _________________ ________________ 更新: 8分之x + 6 =20 _______________ _______________ _______________ _______________ 5分之e - 13 =12 ________________ ________________ ________________ ________________ 更新 2: 15.3 + 4x =63.3 驗算 : ________________ ________________ ______________ ________________ _________________ ______________ ________________ __________________ ________________ __________________ 更新 3: 40 -12.9M =14.2 驗算 : _______________ ________________ _______________ ________________ _______________ _______________ _______________ _________________ _______________ _________________ _______________ _________________ _______________ 更新 4: 5 ( N - 3 ) =10 __________________ __________________ __________________ __________________ __________________ 更新 5: R ( 1 +27%) = 38 . 1 ____________________ ____________________ ____________________ ____________________ ____________________
(16-7)/t = 6 (16-7)=6*t 9=6t 9/6=t t=1.5 8/(x + 6)=20 8=20*(x+6) 8=20x+120 8-120=20x -112=20x -112/20=x x=-5.6 5/(e - 13)=12 5=12*(e - 13) 5=12e-156 5+156=12e 161=12e 161/12=e e=13.416 15.3 + 4x =63.3 4x=63.3-15.3 4x=48 x=48/4 x=12 40 -12.9M =14.2 40 -14.2=12.9M 25.8=12.9m m=2 5 ( N - 3 ) =10 5N-15=10 5N=10+15 5n=25 N=25/5 N=5 R ( 1 +27%) = 38.1 1.27R=38.1 R=38.1/1.27 R=30 2008-02-16 15:46:49 補充: 對不起上述答案之頭3題有錯誤,故不須理會以下我有兩種理解你頭3題問題的方法..你看看...你需要哪種.. 2008-02-16 15:47:10 補充: 第一題首方法 t/(16-7)= 6t/9=6t=6*9t=54第一題第二種方法 16-(t/7)=616-6=t/710=t/710*7=tt=70 2008-02-16 15:47:30 補充: 第二題首方法 (x 6)/8=20x 6=20*8x 6=160x=160-6x=154第二題第二種方法 (x/8) 6=20x/8=20-6x/8=14x=14*8x=112 2008-02-16 15:47:45 補充: 第三題首方法 (e-13)/5=12e- 3=12*5e-13=60e=60 13e=73第三題第二種方法 (e/5)-13=12e/5=12 13e/5=25e=25*5e=125
其他解答:
16-t/7=6 16=6+t/7 16-6=t/7 t/7=10 t=10x7 t=70 Checking: 16-t/7=6 16-70/7=6 LS=16-70/7 =16-10 =6 RS=6 (so的符號)t=70 is the solution of the equation. x/8+6=20 x/8=20-6 x=14x8 x=112 ........
方程 好難丫 教我
發問:
16-7分之t = 6 驗算:_________________ ________________________________ ________________________________ ________________________________ __________________________________ ... 顯示更多 16-7分之t = 6 驗算: _________________ _______________ _________________ _______________ _________________ _______________ _________________ ________________ __________________ ________________ _________________ _________________ ________________ 更新: 8分之x + 6 =20 _______________ _______________ _______________ _______________ 5分之e - 13 =12 ________________ ________________ ________________ ________________ 更新 2: 15.3 + 4x =63.3 驗算 : ________________ ________________ ______________ ________________ _________________ ______________ ________________ __________________ ________________ __________________ 更新 3: 40 -12.9M =14.2 驗算 : _______________ ________________ _______________ ________________ _______________ _______________ _______________ _________________ _______________ _________________ _______________ _________________ _______________ 更新 4: 5 ( N - 3 ) =10 __________________ __________________ __________________ __________________ __________________ 更新 5: R ( 1 +27%) = 38 . 1 ____________________ ____________________ ____________________ ____________________ ____________________
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最佳解答:(16-7)/t = 6 (16-7)=6*t 9=6t 9/6=t t=1.5 8/(x + 6)=20 8=20*(x+6) 8=20x+120 8-120=20x -112=20x -112/20=x x=-5.6 5/(e - 13)=12 5=12*(e - 13) 5=12e-156 5+156=12e 161=12e 161/12=e e=13.416 15.3 + 4x =63.3 4x=63.3-15.3 4x=48 x=48/4 x=12 40 -12.9M =14.2 40 -14.2=12.9M 25.8=12.9m m=2 5 ( N - 3 ) =10 5N-15=10 5N=10+15 5n=25 N=25/5 N=5 R ( 1 +27%) = 38.1 1.27R=38.1 R=38.1/1.27 R=30 2008-02-16 15:46:49 補充: 對不起上述答案之頭3題有錯誤,故不須理會以下我有兩種理解你頭3題問題的方法..你看看...你需要哪種.. 2008-02-16 15:47:10 補充: 第一題首方法 t/(16-7)= 6t/9=6t=6*9t=54第一題第二種方法 16-(t/7)=616-6=t/710=t/710*7=tt=70 2008-02-16 15:47:30 補充: 第二題首方法 (x 6)/8=20x 6=20*8x 6=160x=160-6x=154第二題第二種方法 (x/8) 6=20x/8=20-6x/8=14x=14*8x=112 2008-02-16 15:47:45 補充: 第三題首方法 (e-13)/5=12e- 3=12*5e-13=60e=60 13e=73第三題第二種方法 (e/5)-13=12e/5=12 13e/5=25e=25*5e=125
其他解答:
16-t/7=6 16=6+t/7 16-6=t/7 t/7=10 t=10x7 t=70 Checking: 16-t/7=6 16-70/7=6 LS=16-70/7 =16-10 =6 RS=6 (so的符號)t=70 is the solution of the equation. x/8+6=20 x/8=20-6 x=14x8 x=112 ........
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