3(7-x)-39=21x-6(3+4x)

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Solution for 3(7-x)-39=21x-6(3+4x) equation:


Simplifying
3(7 + -1x) + -39 = 21x + -6(3 + 4x)
(7 * 3 + -1x * 3) + -39 = 21x + -6(3 + 4x)
(21 + -3x) + -39 = 21x + -6(3 + 4x)

Reorder the terms:
21 + -39 + -3x = 21x + -6(3 + 4x)

Combine like terms: 21 + -39 = -18
-18 + -3x = 21x + -6(3 + 4x)
-18 + -3x = 21x + (3 * -6 + 4x * -6)
-18 + -3x = 21x + (-18 + -24x)

Reorder the terms:
-18 + -3x = -18 + 21x + -24x

Combine like terms: 21x + -24x = -3x
-18 + -3x = -18 + -3x

Add '18' to each side of the equation.
-18 + 18 + -3x = -18 + 18 + -3x

Combine like terms: -18 + 18 = 0
0 + -3x = -18 + 18 + -3x
-3x = -18 + 18 + -3x

Combine like terms: -18 + 18 = 0
-3x = 0 + -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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