-7(3x-3)+7=-21x+28

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Solution for -7(3x-3)+7=-21x+28 equation:


Simplifying
-7(3x + -3) + 7 = -21x + 28

Reorder the terms:
-7(-3 + 3x) + 7 = -21x + 28
(-3 * -7 + 3x * -7) + 7 = -21x + 28
(21 + -21x) + 7 = -21x + 28

Reorder the terms:
21 + 7 + -21x = -21x + 28

Combine like terms: 21 + 7 = 28
28 + -21x = -21x + 28

Reorder the terms:
28 + -21x = 28 + -21x

Add '-28' to each side of the equation.
28 + -28 + -21x = 28 + -28 + -21x

Combine like terms: 28 + -28 = 0
0 + -21x = 28 + -28 + -21x
-21x = 28 + -28 + -21x

Combine like terms: 28 + -28 = 0
-21x = 0 + -21x
-21x = -21x

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

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

Combine like terms: -21x + 21x = 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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