-3(7x-3)+7=-21x+16

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Solution for -3(7x-3)+7=-21x+16 equation: 


Simplifying
-3(7x + -3) + 7 = -21x + 16

Reorder the terms:
-3(-3 + 7x) + 7 = -21x + 16
(-3 * -3 + 7x * -3) + 7 = -21x + 16
(9 + -21x) + 7 = -21x + 16

Reorder the terms:
9 + 7 + -21x = -21x + 16

Combine like terms: 9 + 7 = 16
16 + -21x = -21x + 16

Reorder the terms:
16 + -21x = 16 + -21x

Add '-16' to each side of the equation.
16 + -16 + -21x = 16 + -16 + -21x

Combine like terms: 16 + -16 = 0
0 + -21x = 16 + -16 + -21x
-21x = 16 + -16 + -21x

Combine like terms: 16 + -16 = 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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