1. 2x+12= 4x 2. 2x+12= -4x subtract 2x from both sides 12=2x 12= -6x 6=x -2=x plug in the x values to know if they are the solution for the eqaution. 2(6) +12= 4(6) 2(-2) +12= -4(-2) 12+12= 24 -4+12=8 24=24 8=8
The equation is true, it's all real numbers or infinite solutions.