解方程: (1)4(2y+3)=8(1-y)-5(y-2); (2)5x-2/5+2=x+6/5.

问题描述:

解方程:
(1)4(2y+3)=8(1-y)-5(y-2);
(2)

5x-2
5
+2=
x+6
5

(1)去括号得:8y+12=8-8y-5y+10,
移项合并得:21y=6,
解得:y=

2
7

(2)去分母得:5x-2=6+2-10,
移项合并得:4x=-2,
解得:x=-
1
2