4(9+x)=120

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Solution for 4(9+x)=120 equation: 


Simplifying
4(9 + x) = 120
(9 * 4 + x * 4) = 120
(36 + 4x) = 120

Solving
36 + 4x = 120

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + 4x = 120 + -36

Combine like terms: 36 + -36 = 0
0 + 4x = 120 + -36
4x = 120 + -36

Combine like terms: 120 + -36 = 84
4x = 84

Divide each side by '4'.
x = 21

Simplifying
x = 21

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