3x+12=x+48: 3x-x=-12+48 2x=36 x=18
3x + 12 = 42 3x = 30 x = 10
7x + 16 = 3x + 4 4x = -12 x = -3
You simply multiply the expression on the outside (in this case, 3) by each of the expressions inside the parentheses, and add everything up. In this case, 3x + 3 times 4.
6x^2 +32x +12 -4x -3x^2 -36 = 3x^2 +28x -24 simplified
3x + 12 + 10x = 13x + 12
3x+42=6x+12 42=6x-3x+12 42=3x+12 42-12=3x 30=3x 10=x
3x+12=x+48: 3x-x=-12+48 2x=36 x=18
3x + 12 = 42 3x = 30 x = 10
6x+4=3x+12 => 6x-3x=12-4 => 3x=8 => x=8/3=2.666...
It is: 3x^2 +15x +12
4x2+3x+6+5x+3x+6 = 4x2+11x+12 when simplified
y-3x+6y=12 7y=3x+12 y=3x/7 +12/7
Answer : 12
3x+8 = 12 3x = 4 x = 4/3
simplify it, 7x-12=x+2+2x-3x 7x=2+12+3x-3x 7x=14 x=2
6-3x+12=0 6+12-3x=0 18-3x=0 18=3x x=6