-3(2b-7)=-3b+21-3b

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Solution for -3(2b-7)=-3b+21-3b equation:


Simplifying
-3(2b + -7) = -3b + 21 + -3b

Reorder the terms:
-3(-7 + 2b) = -3b + 21 + -3b
(-7 * -3 + 2b * -3) = -3b + 21 + -3b
(21 + -6b) = -3b + 21 + -3b

Reorder the terms:
21 + -6b = 21 + -3b + -3b

Combine like terms: -3b + -3b = -6b
21 + -6b = 21 + -6b

Add '-21' to each side of the equation.
21 + -21 + -6b = 21 + -21 + -6b

Combine like terms: 21 + -21 = 0
0 + -6b = 21 + -21 + -6b
-6b = 21 + -21 + -6b

Combine like terms: 21 + -21 = 0
-6b = 0 + -6b
-6b = -6b

Add '6b' to each side of the equation.
-6b + 6b = -6b + 6b

Combine like terms: -6b + 6b = 0
0 = -6b + 6b

Combine like terms: -6b + 6b = 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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