3x+5(x+13)=129

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Solution for 3x+5(x+13)=129 equation:


Simplifying
3x + 5(x + 13) = 129

Reorder the terms:
3x + 5(13 + x) = 129
3x + (13 * 5 + x * 5) = 129
3x + (65 + 5x) = 129

Reorder the terms:
65 + 3x + 5x = 129

Combine like terms: 3x + 5x = 8x
65 + 8x = 129

Solving
65 + 8x = 129

Solving for variable 'x'.

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

Add '-65' to each side of the equation.
65 + -65 + 8x = 129 + -65

Combine like terms: 65 + -65 = 0
0 + 8x = 129 + -65
8x = 129 + -65

Combine like terms: 129 + -65 = 64
8x = 64

Divide each side by '8'.
x = 8

Simplifying
x = 8

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