3x+20-x=30

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Solution for 3x+20-x=30 equation:


Simplifying
3x + 20 + -1x = 30

Reorder the terms:
20 + 3x + -1x = 30

Combine like terms: 3x + -1x = 2x
20 + 2x = 30

Solving
20 + 2x = 30

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 = 30 + -20

Combine like terms: 20 + -20 = 0
0 + 2x = 30 + -20
2x = 30 + -20

Combine like terms: 30 + -20 = 10
2x = 10

Divide each side by '2'.
x = 5

Simplifying
x = 5

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