8
2x + x + 4 +2x = x + 20 5x + 4 = x + 20 5x - x = 20 - 4 4x = 16 x = 4
-2x+20 = 3x 20 = 3x+2x 20 = 5x 4 = x So x = 4
2x+4 = -16 2x = -16-4 2x = -20 x = -10
2x + (10x - 4) = 20 2x + 10x - 4 = 20 12x - 4 = 20 12x = 24 x = 2
2x-4 = 20 2x = 20+4 2x = 24 x = 12
x equals 4
If x=4 then 2x+7 =
-2x = 20 + 5y-2x - 20 = 5y-2/5x - 4 = yX Intercept = (-10,0) or -10Y Intercept = (0,-4) or -4
y=16 x= -4
add; 5x =20 so x = 4
3x+56 = 2x+4 3x-2x = 4-56 x = -52
x+4+2x = x+20 x+2x-x = 20-4 3x = 16 x = 5 and 1/3