-7x+12+5x+x=21-4+x+3

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Solution for -7x+12+5x+x=21-4+x+3 equation:


Simplifying
-7x + 12 + 5x + x = 21 + -4 + x + 3

Reorder the terms:
12 + -7x + 5x + x = 21 + -4 + x + 3

Combine like terms: -7x + 5x = -2x
12 + -2x + x = 21 + -4 + x + 3

Combine like terms: -2x + x = -1x
12 + -1x = 21 + -4 + x + 3

Reorder the terms:
12 + -1x = 21 + -4 + 3 + x

Combine like terms: 21 + -4 = 17
12 + -1x = 17 + 3 + x

Combine like terms: 17 + 3 = 20
12 + -1x = 20 + x

Solving
12 + -1x = 20 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
12 + -1x + -1x = 20 + x + -1x

Combine like terms: -1x + -1x = -2x
12 + -2x = 20 + x + -1x

Combine like terms: x + -1x = 0
12 + -2x = 20 + 0
12 + -2x = 20

Add '-12' to each side of the equation.
12 + -12 + -2x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + -2x = 20 + -12
-2x = 20 + -12

Combine like terms: 20 + -12 = 8
-2x = 8

Divide each side by '-2'.
x = -4

Simplifying
x = -4

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