3x+x=30+x

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Solution for 3x+x=30+x equation: 


Simplifying
3x + x = 30 + x

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

Solving
4x = 30 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
4x + -1x = 30 + x + -1x

Combine like terms: 4x + -1x = 3x
3x = 30 + x + -1x

Combine like terms: x + -1x = 0
3x = 30 + 0
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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