21-(x+5)=8x-2

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Solution for 21-(x+5)=8x-2 equation:


Simplifying
21 + -1(x + 5) = 8x + -2

Reorder the terms:
21 + -1(5 + x) = 8x + -2
21 + (5 * -1 + x * -1) = 8x + -2
21 + (-5 + -1x) = 8x + -2

Combine like terms: 21 + -5 = 16
16 + -1x = 8x + -2

Reorder the terms:
16 + -1x = -2 + 8x

Solving
16 + -1x = -2 + 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.
16 + -1x + -8x = -2 + 8x + -8x

Combine like terms: -1x + -8x = -9x
16 + -9x = -2 + 8x + -8x

Combine like terms: 8x + -8x = 0
16 + -9x = -2 + 0
16 + -9x = -2

Add '-16' to each side of the equation.
16 + -16 + -9x = -2 + -16

Combine like terms: 16 + -16 = 0
0 + -9x = -2 + -16
-9x = -2 + -16

Combine like terms: -2 + -16 = -18
-9x = -18

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

Simplifying
x = 2

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