(5x-1)+(7x+8)=115

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Solution for (5x-1)+(7x+8)=115 equation:


Simplifying
(5x + -1) + (7x + 8) = 115

Reorder the terms:
(-1 + 5x) + (7x + 8) = 115

Remove parenthesis around (-1 + 5x)
-1 + 5x + (7x + 8) = 115

Reorder the terms:
-1 + 5x + (8 + 7x) = 115

Remove parenthesis around (8 + 7x)
-1 + 5x + 8 + 7x = 115

Reorder the terms:
-1 + 8 + 5x + 7x = 115

Combine like terms: -1 + 8 = 7
7 + 5x + 7x = 115

Combine like terms: 5x + 7x = 12x
7 + 12x = 115

Solving
7 + 12x = 115

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 12x = 115 + -7

Combine like terms: 7 + -7 = 0
0 + 12x = 115 + -7
12x = 115 + -7

Combine like terms: 115 + -7 = 108
12x = 108

Divide each side by '12'.
x = 9

Simplifying
x = 9

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