6x+21=x+7

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Solution for 6x+21=x+7 equation:


Simplifying
6x + 21 = x + 7

Reorder the terms:
21 + 6x = x + 7

Reorder the terms:
21 + 6x = 7 + x

Solving
21 + 6x = 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.
21 + 6x + -1x = 7 + x + -1x

Combine like terms: 6x + -1x = 5x
21 + 5x = 7 + x + -1x

Combine like terms: x + -1x = 0
21 + 5x = 7 + 0
21 + 5x = 7

Add '-21' to each side of the equation.
21 + -21 + 5x = 7 + -21

Combine like terms: 21 + -21 = 0
0 + 5x = 7 + -21
5x = 7 + -21

Combine like terms: 7 + -21 = -14
5x = -14

Divide each side by '5'.
x = -2.8

Simplifying
x = -2.8

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