7x+3(3x+11)=129

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Solution for 7x+3(3x+11)=129 equation:


Simplifying
7x + 3(3x + 11) = 129

Reorder the terms:
7x + 3(11 + 3x) = 129
7x + (11 * 3 + 3x * 3) = 129
7x + (33 + 9x) = 129

Reorder the terms:
33 + 7x + 9x = 129

Combine like terms: 7x + 9x = 16x
33 + 16x = 129

Solving
33 + 16x = 129

Solving for variable 'x'.

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

Add '-33' to each side of the equation.
33 + -33 + 16x = 129 + -33

Combine like terms: 33 + -33 = 0
0 + 16x = 129 + -33
16x = 129 + -33

Combine like terms: 129 + -33 = 96
16x = 96

Divide each side by '16'.
x = 6

Simplifying
x = 6

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