4(x-1)=3(x+3)-(x-9)?????

4(x-1)=3(x+3)-(x-9)
4x-4=3x+9-x+9
4x-3x+x=9+9+4
2x=22
x=11

Solution 解

4(x-1)=3(x+3)-(x-9)

4x-4=3x+9-x+9 <--(1) Exapnd展開 4(x+1) and和 3(x+3) (2) -(-)=+

4x-3x+x=4+9+9 <--Group the like terms(同類項).

2x=22 <--以一些簡單的算術得出2x=22的等式

x=11 <--Finally, we obtain the answer. The value of x (x的值) is 11.

4x-4=3x+9-x+9
4x-3x+x=9+9+4
2x=22
x=11

4(x-1) =3(x+3)-(x-9)
4x-4=3x+9-x+9
2x=22
x=11

4(x-1)=3(x+3)-(x-9)

4x-4=3x+9-x+9
2x=22
x=11