Multiply 30 by -3.
Move all terms not containing x to the right side of the equation.
Subtract 12 from both sides of the equation.
Subtract 12 from -90.
Divide each term by -6 and simplify.
Divide each term in -6x=-102 by -6.
Cancel the common factor of -6.
Cancel the common factor.
Divide x by 1.
Divide -102 by -6.
Solve using the Square Root Property 12+(-6x)=30(-3)