-3(7x-4)=-21x+12

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Solution for -3(7x-4)=-21x+12 equation:


Simplifying
-3(7x + -4) = -21x + 12

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

Reorder the terms:
12 + -21x = 12 + -21x

Add '-12' to each side of the equation.
12 + -12 + -21x = 12 + -12 + -21x

Combine like terms: 12 + -12 = 0
0 + -21x = 12 + -12 + -21x
-21x = 12 + -12 + -21x

Combine like terms: 12 + -12 = 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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