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

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


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

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

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

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

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

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

Solving
12 + -1x = 17 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
12 + -1x + -4x = 17 + 4x + -4x

Combine like terms: -1x + -4x = -5x
12 + -5x = 17 + 4x + -4x

Combine like terms: 4x + -4x = 0
12 + -5x = 17 + 0
12 + -5x = 17

Add '-12' to each side of the equation.
12 + -12 + -5x = 17 + -12

Combine like terms: 12 + -12 = 0
0 + -5x = 17 + -12
-5x = 17 + -12

Combine like terms: 17 + -12 = 5
-5x = 5

Divide each side by '-5'.
x = -1

Simplifying
x = -1

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