First, we need to use the distributive property on the left side of the equation. (x * 3) + (x * -x) + (2x * x) + (2x * -1)
Which turns out to be...
Then, we need to get "x" on one side (I like "x" on the left side). Subtract "" and add "" to both sides.
We end up with...
4x (is less than or equal to) 12
Divide both sides by "4," and we end up with...
x (is less than or equal to) 3