7-9(x-1)-3=7+(9-3x)-81

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Solution for 7-9(x-1)-3=7+(9-3x)-81 equation:


Simplifying
7 + -9(x + -1) + -3 = 7 + (9 + -3x) + -81

Reorder the terms:
7 + -9(-1 + x) + -3 = 7 + (9 + -3x) + -81
7 + (-1 * -9 + x * -9) + -3 = 7 + (9 + -3x) + -81
7 + (9 + -9x) + -3 = 7 + (9 + -3x) + -81

Reorder the terms:
7 + 9 + -3 + -9x = 7 + (9 + -3x) + -81

Combine like terms: 7 + 9 = 16
16 + -3 + -9x = 7 + (9 + -3x) + -81

Combine like terms: 16 + -3 = 13
13 + -9x = 7 + (9 + -3x) + -81

Remove parenthesis around (9 + -3x)
13 + -9x = 7 + 9 + -3x + -81

Reorder the terms:
13 + -9x = 7 + 9 + -81 + -3x

Combine like terms: 7 + 9 = 16
13 + -9x = 16 + -81 + -3x

Combine like terms: 16 + -81 = -65
13 + -9x = -65 + -3x

Solving
13 + -9x = -65 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
13 + -9x + 3x = -65 + -3x + 3x

Combine like terms: -9x + 3x = -6x
13 + -6x = -65 + -3x + 3x

Combine like terms: -3x + 3x = 0
13 + -6x = -65 + 0
13 + -6x = -65

Add '-13' to each side of the equation.
13 + -13 + -6x = -65 + -13

Combine like terms: 13 + -13 = 0
0 + -6x = -65 + -13
-6x = -65 + -13

Combine like terms: -65 + -13 = -78
-6x = -78

Divide each side by '-6'.
x = 13

Simplifying
x = 13

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