8y=15y-21

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Solution for 8y=15y-21 equation: 


Simplifying
8y = 15y + -21

Reorder the terms:
8y = -21 + 15y

Solving
8y = -21 + 15y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-15y' to each side of the equation.
8y + -15y = -21 + 15y + -15y

Combine like terms: 8y + -15y = -7y
-7y = -21 + 15y + -15y

Combine like terms: 15y + -15y = 0
-7y = -21 + 0
-7y = -21

Divide each side by '-7'.
y = 3

Simplifying
y = 3

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