4y-5=-21

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Solution for 4y-5=-21 equation: 


Simplifying
4y + -5 = -21

Reorder the terms:
-5 + 4y = -21

Solving
-5 + 4y = -21

Solving for variable 'y'.

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

Add '5' to each side of the equation.
-5 + 5 + 4y = -21 + 5

Combine like terms: -5 + 5 = 0
0 + 4y = -21 + 5
4y = -21 + 5

Combine like terms: -21 + 5 = -16
4y = -16

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

Simplifying
y = -4

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