3x+20+x=140

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Solution for 3x+20+x=140 equation: 


Simplifying
3x + 20 + x = 140

Reorder the terms:
20 + 3x + x = 140

Combine like terms: 3x + x = 4x
20 + 4x = 140

Solving
20 + 4x = 140

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 + 4x = 140 + -20

Combine like terms: 20 + -20 = 0
0 + 4x = 140 + -20
4x = 140 + -20

Combine like terms: 140 + -20 = 120
4x = 120

Divide each side by '4'.
x = 30

Simplifying
x = 30

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