3x+2(2x)=77

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Solution for 3x+2(2x)=77 equation: 


Simplifying
3x + 2(2x) = 77

Remove parenthesis around (2x)
3x + 2 * 2x = 77

Multiply 2 * 2
3x + 4x = 77

Combine like terms: 3x + 4x = 7x
7x = 77

Solving
7x = 77

Solving for variable 'x'.

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

Divide each side by '7'.
x = 11

Simplifying
x = 11

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