Question

(x-12)30%=(x+18)40% solve that

Answer 1

(x-12)30%= (x+18)40%
x-12)30/100=(x+18)40/100
(x-12)3= (x+18)4
3x-36= 4x +72
x= -108

Answer 2

= (x-12)30/100= (x+18)40/100
= 30x/100- 360/100= 40x/100+720/100
= 30x-360/100= 40x+720/100
= 30x-360= 40x+720
= 30x-40x= 720+360
= -10x= 1080
= x= -1080/10= -108

Hope it helps you