x+3x+(3x+30)=120

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Solution for x+3x+(3x+30)=120 equation:


Simplifying
x + 3x + (3x + 30) = 120

Reorder the terms:
x + 3x + (30 + 3x) = 120

Remove parenthesis around (30 + 3x)
x + 3x + 30 + 3x = 120

Reorder the terms:
30 + x + 3x + 3x = 120

Combine like terms: x + 3x = 4x
30 + 4x + 3x = 120

Combine like terms: 4x + 3x = 7x
30 + 7x = 120

Solving
30 + 7x = 120

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 7x = 120 + -30

Combine like terms: 30 + -30 = 0
0 + 7x = 120 + -30
7x = 120 + -30

Combine like terms: 120 + -30 = 90
7x = 90

Divide each side by '7'.
x = 12.85714286

Simplifying
x = 12.85714286

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