-(3xy-12)+3(4xy+7)=

Solution for -(3xy-12)+3(4xy+7)= equation:

Simplifying
-1(3xy + -12) + 3(4xy + 7) = 0

Reorder the terms:
-1(-12 + 3xy) + 3(4xy + 7) = 0
(-12 * -1 + 3xy * -1) + 3(4xy + 7) = 0
(12 + -3xy) + 3(4xy + 7) = 0

Reorder the terms:
12 + -3xy + 3(7 + 4xy) = 0
12 + -3xy + (7 * 3 + 4xy * 3) = 0
12 + -3xy + (21 + 12xy) = 0

Reorder the terms:
12 + 21 + -3xy + 12xy = 0

Combine like terms: 12 + 21 = 33
33 + -3xy + 12xy = 0

Combine like terms: -3xy + 12xy = 9xy
33 + 9xy = 0

Solving
33 + 9xy = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-33' to each side of the equation.
33 + -33 + 9xy = 0 + -33

Combine like terms: 33 + -33 = 0
0 + 9xy = 0 + -33
9xy = 0 + -33

Combine like terms: 0 + -33 = -33
9xy = -33

Divide each side by '9y'.
x = -3.666666667y-1

Simplifying
x = -3.666666667y-1