8x + 12 = 4x - 4 8x - 4x = -4 - 12 4x = -16 x = -4
-4x-4 equals -16. Add 4 to both sides; -4x equals -12. Divide both sides by -4; x equals 3.
4[x+3]=4x+12 4x+12=4x+12 it's open.
6x+4 = x+12+4x-6 6x-x-4x = 12-6-4 x = 2
it is 4
If: 4x-4 = 12 Then: x = 4
If: 4x-4 = 12 Then: x = 4
8x + 12 = 4x - 4 8x - 4x = -4 - 12 4x = -16 x = -4
-4x + 8 = -4 -4x + 8 - 8 = -4 -8 -4x = -12 -4x/-4 = -12/-4 x = 3
-4x-4 equals -16. Add 4 to both sides; -4x equals -12. Divide both sides by -4; x equals 3.
4x+3y = 12 3y = -4x+12 y = -4/3x+4
4[x+3]=4x+12 4x+12=4x+12 it's open.
8-3x-x = 12 8-4x = 12 -4x = 12-8 -4x = 4 x = -1
6x+4 = x+12+4x-6 6x-x-4x = 12-6-4 x = 2
it is 4
8x+30=4x+18 -4x -4x 4x+30=18 -30 -30 4x=-12 4x/4=-12/4 x=-3
8