-15y+21=3(-5y+7)

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


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

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

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

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

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

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

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

Combine like terms: -15y + 15y = 0
0 = -15y + 15y

Combine like terms: -15y + 15y = 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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