解方程:(1)7y+26=-5y+10(2)5(x+2)=-2(5x-1)(3)2x+13?5x?16=1(4)0.1x?0.20.2?x+10.5=1.5

2025-03-26 01:29:11
推荐回答(1个)
回答1:

(1)7y+5y=10-26
12y=-16
y=-
3
4

(2)5x+10=-10x+2
5x+10x=2-10
15x=-8
x=-
8
15

(3)2(2x+1)-(5x-1)=6
4x+2-5x+1=6
4x-5x=6-2-1
-x=3
x=-3;
(4)
x?2
2
-2(x+1)=1.5
x-2-4(x+1)=3
x-2-4x-4=3
-3x=9
x=-3.