7(x-1)-5(2-x)=3
x=?
幫下我解左佢喇!~!
2007-08-04 11:18 pm
回答 (7)
2007-08-04 11:23 pm
✔ 最佳答案
7(x - 1) - 5(2 - x) = 37x - 7 - 10 + 5x = 3
12x - 17 = 3
12x = 20
x = 20/12 = 1.6667
希望幫到你.
參考: myself
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
(7x-7)-(10-5x)=3
7x-7-10+5x=3
12x-17=3
12x=20
x=1.66
2007-08-04 11:25 pm
x=3/5
7x-7-10+5x=3
12x-17=3
12x=20
x=20/12
=3/5
7x-7-10+5x=3
12x-17=3
12x=20
x=20/12
=3/5
2007-08-04 11:22 pm
7(x-1)-5(2-x)=3
7x - 7 -10 +5x =3
12x = 20
x = 1.66666666666
7x - 7 -10 +5x =3
12x = 20
x = 1.66666666666
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
7x-7-10+10x=3
17x-17=3
17x=20
x=17/20
收錄日期: 2021-04-23 19:42:34
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