-x+7=6x+21

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


Simplifying
-1x + 7 = 6x + 21

Reorder the terms:
7 + -1x = 6x + 21

Reorder the terms:
7 + -1x = 21 + 6x

Solving
7 + -1x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
7 + -1x + -6x = 21 + 6x + -6x

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

Combine like terms: 6x + -6x = 0
7 + -7x = 21 + 0
7 + -7x = 21

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

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

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

Divide each side by '-7'.
x = -2

Simplifying
x = -2

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