-4x+7x=4(x+3)-(x+12)

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Solution for -4x+7x=4(x+3)-(x+12) equation: 


Simplifying
-4x + 7x = 4(x + 3) + -1(x + 12)

Combine like terms: -4x + 7x = 3x
3x = 4(x + 3) + -1(x + 12)

Reorder the terms:
3x = 4(3 + x) + -1(x + 12)
3x = (3 * 4 + x * 4) + -1(x + 12)
3x = (12 + 4x) + -1(x + 12)

Reorder the terms:
3x = 12 + 4x + -1(12 + x)
3x = 12 + 4x + (12 * -1 + x * -1)
3x = 12 + 4x + (-12 + -1x)

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

Combine like terms: 12 + -12 = 0
3x = 0 + 4x + -1x
3x = 4x + -1x

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

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

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

Combine like terms: 3x + -3x = 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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