21+8y=85

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Solution for 21+8y=85 equation: 


Simplifying
21 + 8y = 85

Solving
21 + 8y = 85

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + 8y = 85 + -21

Combine like terms: 21 + -21 = 0
0 + 8y = 85 + -21
8y = 85 + -21

Combine like terms: 85 + -21 = 64
8y = 64

Divide each side by '8'.
y = 8

Simplifying
y = 8

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