add; 5x =20 so x = 4
3x - 12 = -2x + 235x = 35 so x = 7
2x+12-3x = 5 2x-3x = 5-12 -x = -7 x = 7
2x-12
2x+12-3x = 5 2x-3x = 5-12 x = -7
3x+7=2x-5 x=-12
(3x + 2x) -12 =5x-12 the answer is 5x-12 it is just a simple case of simplifying
simplify it, 7x-12=x+2+2x-3x 7x=2+12+3x-3x 7x=14 x=2
2x+3x = 5x
x=5
x=12
3x+12=x+48: 3x-x=-12+48 2x=36 x=18
so 3x + 2 = x + 12 ie 2x = 10 x =5