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2007-08-04 11:18 pm

7(x-1)-5(2-x)=3

x=?

回答 (7)

2007-08-04 11:23 pm

✔ 最佳答案

7(x - 1) - 5(2 - x) = 3
7x - 7 - 10 + 5x = 3
12x - 17 = 3
12x = 20
x = 20/12 = 1.6667

希望幫到你.

參考: myself

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2007-08-04 11:31 pm

7(x-1)-5(2-x)=3
7x-7-10+10x=3
17x-17=3
17x=20
x=17/20

參考: me

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2007-08-04 11:29 pm

7(x-1)-5(2-x)=3
(7x-7)-(10-5x)=3
7x-7-10+5x=3
12x-17=3
12x=20
x=1.66

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2007-08-04 11:25 pm

x=3/5
7x-7-10+5x=3
12x-17=3
12x=20
x=20/12
=3/5

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2007-08-04 11:22 pm

7(x-1)-5(2-x)=3
7x - 7 -10 +5x =3
12x = 20
x = 1.66666666666

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2007-08-04 11:22 pm

x = 5/3

參考: 唔肯定岩唔岩

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2007-08-04 11:21 pm

7(x-1)-5(2-x)=3
7x-7-10+10x=3
17x-17=3
17x=20
x=17/20

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