21-(x+6)=8x-3

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Solution for 21-(x+6)=8x-3 equation:


Simplifying
21 + -1(x + 6) = 8x + -3

Reorder the terms:
21 + -1(6 + x) = 8x + -3
21 + (6 * -1 + x * -1) = 8x + -3
21 + (-6 + -1x) = 8x + -3

Combine like terms: 21 + -6 = 15
15 + -1x = 8x + -3

Reorder the terms:
15 + -1x = -3 + 8x

Solving
15 + -1x = -3 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
15 + -1x + -8x = -3 + 8x + -8x

Combine like terms: -1x + -8x = -9x
15 + -9x = -3 + 8x + -8x

Combine like terms: 8x + -8x = 0
15 + -9x = -3 + 0
15 + -9x = -3

Add '-15' to each side of the equation.
15 + -15 + -9x = -3 + -15

Combine like terms: 15 + -15 = 0
0 + -9x = -3 + -15
-9x = -3 + -15

Combine like terms: -3 + -15 = -18
-9x = -18

Divide each side by '-9'.
x = 2

Simplifying
x = 2

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