3(x+1)-2x=-6 explain how to solve with answer.

you distribute the 3 to each value inside the parenthesis so it becomes 3x + 3 - 2x = -6

then combine the like terms by doing 3x-2x= x, and bringing the 3 to the other side of the equation by subtracting so the whole problem would then read, x=-9 

to check you would plug in the -9 wherever there is an x. 

3(-9 + 1) - 2(-9) = -6

3(-8) - 2(-9) = -6

-24 + 18 = -6

-6 = -6