-6x+21-10=9-10x-8

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Solution for -6x+21-10=9-10x-8 equation: 


Simplifying
-6x + 21 + -10 = 9 + -10x + -8

Reorder the terms:
21 + -10 + -6x = 9 + -10x + -8

Combine like terms: 21 + -10 = 11
11 + -6x = 9 + -10x + -8

Reorder the terms:
11 + -6x = 9 + -8 + -10x

Combine like terms: 9 + -8 = 1
11 + -6x = 1 + -10x

Solving
11 + -6x = 1 + -10x

Solving for variable 'x'.

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

Add '10x' to each side of the equation.
11 + -6x + 10x = 1 + -10x + 10x

Combine like terms: -6x + 10x = 4x
11 + 4x = 1 + -10x + 10x

Combine like terms: -10x + 10x = 0
11 + 4x = 1 + 0
11 + 4x = 1

Add '-11' to each side of the equation.
11 + -11 + 4x = 1 + -11

Combine like terms: 11 + -11 = 0
0 + 4x = 1 + -11
4x = 1 + -11

Combine like terms: 1 + -11 = -10
4x = -10

Divide each side by '4'.
x = -2.5

Simplifying
x = -2.5

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