21-9+4x-5x=8x+4+2x-7

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Solution for 21-9+4x-5x=8x+4+2x-7 equation:


Simplifying
21 + -9 + 4x + -5x = 8x + 4 + 2x + -7

Combine like terms: 21 + -9 = 12
12 + 4x + -5x = 8x + 4 + 2x + -7

Combine like terms: 4x + -5x = -1x
12 + -1x = 8x + 4 + 2x + -7

Reorder the terms:
12 + -1x = 4 + -7 + 8x + 2x

Combine like terms: 4 + -7 = -3
12 + -1x = -3 + 8x + 2x

Combine like terms: 8x + 2x = 10x
12 + -1x = -3 + 10x

Solving
12 + -1x = -3 + 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.
12 + -1x + -10x = -3 + 10x + -10x

Combine like terms: -1x + -10x = -11x
12 + -11x = -3 + 10x + -10x

Combine like terms: 10x + -10x = 0
12 + -11x = -3 + 0
12 + -11x = -3

Add '-12' to each side of the equation.
12 + -12 + -11x = -3 + -12

Combine like terms: 12 + -12 = 0
0 + -11x = -3 + -12
-11x = -3 + -12

Combine like terms: -3 + -12 = -15
-11x = -15

Divide each side by '-11'.
x = 1.363636364

Simplifying
x = 1.363636364

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