15x+(10-x)=129

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Solution for 15x+(10-x)=129 equation:


Simplifying
15x + (10 + -1x) = 129

Remove parenthesis around (10 + -1x)
15x + 10 + -1x = 129

Reorder the terms:
10 + 15x + -1x = 129

Combine like terms: 15x + -1x = 14x
10 + 14x = 129

Solving
10 + 14x = 129

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 14x = 129 + -10

Combine like terms: 10 + -10 = 0
0 + 14x = 129 + -10
14x = 129 + -10

Combine like terms: 129 + -10 = 119
14x = 119

Divide each side by '14'.
x = 8.5

Simplifying
x = 8.5

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