21-(x+7)=4x-6

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Solution for 21-(x+7)=4x-6 equation:


Simplifying
21 + -1(x + 7) = 4x + -6

Reorder the terms:
21 + -1(7 + x) = 4x + -6
21 + (7 * -1 + x * -1) = 4x + -6
21 + (-7 + -1x) = 4x + -6

Combine like terms: 21 + -7 = 14
14 + -1x = 4x + -6

Reorder the terms:
14 + -1x = -6 + 4x

Solving
14 + -1x = -6 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
14 + -1x + -4x = -6 + 4x + -4x

Combine like terms: -1x + -4x = -5x
14 + -5x = -6 + 4x + -4x

Combine like terms: 4x + -4x = 0
14 + -5x = -6 + 0
14 + -5x = -6

Add '-14' to each side of the equation.
14 + -14 + -5x = -6 + -14

Combine like terms: 14 + -14 = 0
0 + -5x = -6 + -14
-5x = -6 + -14

Combine like terms: -6 + -14 = -20
-5x = -20

Divide each side by '-5'.
x = 4

Simplifying
x = 4

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