10x-4x+8=12x+7x+21

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Solution for 10x-4x+8=12x+7x+21 equation:


Simplifying
10x + -4x + 8 = 12x + 7x + 21

Reorder the terms:
8 + 10x + -4x = 12x + 7x + 21

Combine like terms: 10x + -4x = 6x
8 + 6x = 12x + 7x + 21

Reorder the terms:
8 + 6x = 21 + 12x + 7x

Combine like terms: 12x + 7x = 19x
8 + 6x = 21 + 19x

Solving
8 + 6x = 21 + 19x

Solving for variable 'x'.

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

Add '-19x' to each side of the equation.
8 + 6x + -19x = 21 + 19x + -19x

Combine like terms: 6x + -19x = -13x
8 + -13x = 21 + 19x + -19x

Combine like terms: 19x + -19x = 0
8 + -13x = 21 + 0
8 + -13x = 21

Add '-8' to each side of the equation.
8 + -8 + -13x = 21 + -8

Combine like terms: 8 + -8 = 0
0 + -13x = 21 + -8
-13x = 21 + -8

Combine like terms: 21 + -8 = 13
-13x = 13

Divide each side by '-13'.
x = -1

Simplifying
x = -1

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