1) 18-X=25-8X. 2) (4X+5)-(5X+7)=4

Question

1) 18-X=25-8X. 2) (4X+5)-(5X+7)=4

Answer 1

2) 4x+5-5x-7=4
-x=-6
x=6

Answer 2

18-x-25+8x=0
-7+7x=0
7x=7
x=1
(4x+5)-(5x+7)=4
4x+5-5x-7-4=0
-x-6=0
-x=6
x=-6