x+(x+20)=120

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Solution for x+(x+20)=120 equation:


Simplifying
x + (x + 20) = 120

Reorder the terms:
x + (20 + x) = 120

Remove parenthesis around (20 + x)
x + 20 + x = 120

Reorder the terms:
20 + x + x = 120

Combine like terms: x + x = 2x
20 + 2x = 120

Solving
20 + 2x = 120

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 2x = 120 + -20

Combine like terms: 20 + -20 = 0
0 + 2x = 120 + -20
2x = 120 + -20

Combine like terms: 120 + -20 = 100
2x = 100

Divide each side by '2'.
x = 50

Simplifying
x = 50

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