21-5y=-45

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Solution for 21-5y=-45 equation: 


Simplifying
21 + -5y = -45

Solving
21 + -5y = -45

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 + -5y = -45 + -21

Combine like terms: 21 + -21 = 0
0 + -5y = -45 + -21
-5y = -45 + -21

Combine like terms: -45 + -21 = -66
-5y = -66

Divide each side by '-5'.
y = 13.2

Simplifying
y = 13.2

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