3x+20=x+7

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Solution for 3x+20=x+7 equation:


Simplifying
3x + 20 = x + 7

Reorder the terms:
20 + 3x = x + 7

Reorder the terms:
20 + 3x = 7 + x

Solving
20 + 3x = 7 + 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.
20 + 3x + -1x = 7 + x + -1x

Combine like terms: 3x + -1x = 2x
20 + 2x = 7 + x + -1x

Combine like terms: x + -1x = 0
20 + 2x = 7 + 0
20 + 2x = 7

Add '-20' to each side of the equation.
20 + -20 + 2x = 7 + -20

Combine like terms: 20 + -20 = 0
0 + 2x = 7 + -20
2x = 7 + -20

Combine like terms: 7 + -20 = -13
2x = -13

Divide each side by '2'.
x = -6.5

Simplifying
x = -6.5

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