21-4*y=59

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Solution for 21-4*y=59 equation: 


Simplifying
21 + -4y = 59

Solving
21 + -4y = 59

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 + -4y = 59 + -21

Combine like terms: 21 + -21 = 0
0 + -4y = 59 + -21
-4y = 59 + -21

Combine like terms: 59 + -21 = 38
-4y = 38

Divide each side by '-4'.
y = -9.5

Simplifying
y = -9.5

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