7(5-8)+[6+4(8-9)]=x

Solution for 7(5-8)+[6+4(8-9)]=x equation:

Simplifying
7(5 + -8) + [6 + 4(8 + -9)] = x

Combine like terms: 5 + -8 = -3
7(-3) + [6 + 4(8 + -9)] = x

Multiply 7 * -3
-21 + [6 + 4(8 + -9)] = x

Combine like terms: 8 + -9 = -1
-21 + [6 + 4(-1)] = x

Multiply 4 * -1
-21 + [6 + -4] = x

Combine like terms: 6 + -4 = 2
-21 + [2] = x
-21 + 2 = x

Combine like terms: -21 + 2 = -19
-19 = x

Solving
-19 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-19 + -1x = x + -1x

Combine like terms: x + -1x = 0
-19 + -1x = 0

Add '19' to each side of the equation.
-19 + 19 + -1x = 0 + 19

Combine like terms: -19 + 19 = 0
0 + -1x = 0 + 19
-1x = 0 + 19

Combine like terms: 0 + 19 = 19
-1x = 19

Divide each side by '-1'.
x = -19

Simplifying
x = -19