Use the commutative property to combine like terms on each side of the equation.

x + 3 – 14x + 11 = 3x – 12 + 10x

-13x + 14 = 13x – 12
-13x – 8 = -7x – 12
-14x + 14 = 13x – 12
-14x – 8 = -7x – 12