.5(6)(13+x)=120

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Solution for .5(6)(13+x)=120 equation: 


Simplifying
0.5(6)(13 + x) = 120

Multiply 0.5 * 6
3(13 + x) = 120
(13 * 3 + x * 3) = 120
(39 + 3x) = 120

Solving
39 + 3x = 120

Solving for variable 'x'.

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

Add '-39' to each side of the equation.
39 + -39 + 3x = 120 + -39

Combine like terms: 39 + -39 = 0
0 + 3x = 120 + -39
3x = 120 + -39

Combine like terms: 120 + -39 = 81
3x = 81

Divide each side by '3'.
x = 27

Simplifying
x = 27

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