-4-(12x+8)+21=7+x-(13x-2)

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Solution for -4-(12x+8)+21=7+x-(13x-2) equation:


Simplifying
-4 + -1(12x + 8) + 21 = 7 + x + -1(13x + -2)

Reorder the terms:
-4 + -1(8 + 12x) + 21 = 7 + x + -1(13x + -2)
-4 + (8 * -1 + 12x * -1) + 21 = 7 + x + -1(13x + -2)
-4 + (-8 + -12x) + 21 = 7 + x + -1(13x + -2)

Reorder the terms:
-4 + -8 + 21 + -12x = 7 + x + -1(13x + -2)

Combine like terms: -4 + -8 = -12
-12 + 21 + -12x = 7 + x + -1(13x + -2)

Combine like terms: -12 + 21 = 9
9 + -12x = 7 + x + -1(13x + -2)

Reorder the terms:
9 + -12x = 7 + x + -1(-2 + 13x)
9 + -12x = 7 + x + (-2 * -1 + 13x * -1)
9 + -12x = 7 + x + (2 + -13x)

Reorder the terms:
9 + -12x = 7 + 2 + x + -13x

Combine like terms: 7 + 2 = 9
9 + -12x = 9 + x + -13x

Combine like terms: x + -13x = -12x
9 + -12x = 9 + -12x

Add '-9' to each side of the equation.
9 + -9 + -12x = 9 + -9 + -12x

Combine like terms: 9 + -9 = 0
0 + -12x = 9 + -9 + -12x
-12x = 9 + -9 + -12x

Combine like terms: 9 + -9 = 0
-12x = 0 + -12x
-12x = -12x

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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