21-11x+18x=3(4x+7)-5x

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Solution for 21-11x+18x=3(4x+7)-5x equation:


Simplifying
21 + -11x + 18x = 3(4x + 7) + -5x

Combine like terms: -11x + 18x = 7x
21 + 7x = 3(4x + 7) + -5x

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

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

Add '-21' to each side of the equation.
21 + -21 + 7x = 21 + -21 + 7x

Combine like terms: 21 + -21 = 0
0 + 7x = 21 + -21 + 7x
7x = 21 + -21 + 7x

Combine like terms: 21 + -21 = 0
7x = 0 + 7x
7x = 7x

Add '-7x' to each side of the equation.
7x + -7x = 7x + -7x

Combine like terms: 7x + -7x = 0
0 = 7x + -7x

Combine like terms: 7x + -7x = 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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