8y=21+y

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Solution for 8y=21+y equation: 


Simplifying
8y = 21 + y

Solving
8y = 21 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
8y + -1y = 21 + y + -1y

Combine like terms: 8y + -1y = 7y
7y = 21 + y + -1y

Combine like terms: y + -1y = 0
7y = 21 + 0
7y = 21

Divide each side by '7'.
y = 3

Simplifying
y = 3

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