21-(x+7)=6x

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


Simplifying
21 + -1(x + 7) = 6x

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

Combine like terms: 21 + -7 = 14
14 + -1x = 6x

Solving
14 + -1x = 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.
14 + -1x + -6x = 6x + -6x

Combine like terms: -1x + -6x = -7x
14 + -7x = 6x + -6x

Combine like terms: 6x + -6x = 0
14 + -7x = 0

Add '-14' to each side of the equation.
14 + -14 + -7x = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -7x = 0 + -14
-7x = 0 + -14

Combine like terms: 0 + -14 = -14
-7x = -14

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

Simplifying
x = 2

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