21-8y=13

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Solution for 21-8y=13 equation: 


Simplifying
21 + -8y = 13

Solving
21 + -8y = 13

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 = 13 + -21

Combine like terms: 21 + -21 = 0
0 + -8y = 13 + -21
-8y = 13 + -21

Combine like terms: 13 + -21 = -8
-8y = -8

Divide each side by '-8'.
y = 1

Simplifying
y = 1

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