120=(4x+6)+(7x+15)

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Solution for 120=(4x+6)+(7x+15) equation:


Simplifying
120 = (4x + 6) + (7x + 15)

Reorder the terms:
120 = (6 + 4x) + (7x + 15)

Remove parenthesis around (6 + 4x)
120 = 6 + 4x + (7x + 15)

Reorder the terms:
120 = 6 + 4x + (15 + 7x)

Remove parenthesis around (15 + 7x)
120 = 6 + 4x + 15 + 7x

Reorder the terms:
120 = 6 + 15 + 4x + 7x

Combine like terms: 6 + 15 = 21
120 = 21 + 4x + 7x

Combine like terms: 4x + 7x = 11x
120 = 21 + 11x

Solving
120 = 21 + 11x

Solving for variable 'x'.

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

Add '-11x' to each side of the equation.
120 + -11x = 21 + 11x + -11x

Combine like terms: 11x + -11x = 0
120 + -11x = 21 + 0
120 + -11x = 21

Add '-120' to each side of the equation.
120 + -120 + -11x = 21 + -120

Combine like terms: 120 + -120 = 0
0 + -11x = 21 + -120
-11x = 21 + -120

Combine like terms: 21 + -120 = -99
-11x = -99

Divide each side by '-11'.
x = 9

Simplifying
x = 9

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