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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