(5x-2)+(7x+5)=-81

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Solution for (5x-2)+(7x+5)=-81 equation:


Simplifying
(5x + -2) + (7x + 5) = -81

Reorder the terms:
(-2 + 5x) + (7x + 5) = -81

Remove parenthesis around (-2 + 5x)
-2 + 5x + (7x + 5) = -81

Reorder the terms:
-2 + 5x + (5 + 7x) = -81

Remove parenthesis around (5 + 7x)
-2 + 5x + 5 + 7x = -81

Reorder the terms:
-2 + 5 + 5x + 7x = -81

Combine like terms: -2 + 5 = 3
3 + 5x + 7x = -81

Combine like terms: 5x + 7x = 12x
3 + 12x = -81

Solving
3 + 12x = -81

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 12x = -81 + -3

Combine like terms: 3 + -3 = 0
0 + 12x = -81 + -3
12x = -81 + -3

Combine like terms: -81 + -3 = -84
12x = -84

Divide each side by '12'.
x = -7

Simplifying
x = -7

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