-(3xy-9)+3(3xy+7)=

Solution for -(3xy-9)+3(3xy+7)= equation:

Simplifying
-1(3xy + -9) + 3(3xy + 7) = 0

Reorder the terms:
-1(-9 + 3xy) + 3(3xy + 7) = 0
(-9 * -1 + 3xy * -1) + 3(3xy + 7) = 0
(9 + -3xy) + 3(3xy + 7) = 0

Reorder the terms:
9 + -3xy + 3(7 + 3xy) = 0
9 + -3xy + (7 * 3 + 3xy * 3) = 0
9 + -3xy + (21 + 9xy) = 0

Reorder the terms:
9 + 21 + -3xy + 9xy = 0

Combine like terms: 9 + 21 = 30
30 + -3xy + 9xy = 0

Combine like terms: -3xy + 9xy = 6xy
30 + 6xy = 0

Solving
30 + 6xy = 0

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 6xy = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 6xy = 0 + -30
6xy = 0 + -30

Combine like terms: 0 + -30 = -30
6xy = -30

Divide each side by '6y'.
x = -5y-1

Simplifying
x = -5y-1