3(7x-5)=21x-15

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Solution for 3(7x-5)=21x-15 equation: 


Simplifying
3(7x + -5) = 21x + -15

Reorder the terms:
3(-5 + 7x) = 21x + -15
(-5 * 3 + 7x * 3) = 21x + -15
(-15 + 21x) = 21x + -15

Reorder the terms:
-15 + 21x = -15 + 21x

Add '15' to each side of the equation.
-15 + 15 + 21x = -15 + 15 + 21x

Combine like terms: -15 + 15 = 0
0 + 21x = -15 + 15 + 21x
21x = -15 + 15 + 21x

Combine like terms: -15 + 15 = 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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