5-21y=25-5y

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Solution for 5-21y=25-5y equation:


Simplifying
5 + -21y = 25 + -5y

Solving
5 + -21y = 25 + -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
5 + -21y + 5y = 25 + -5y + 5y

Combine like terms: -21y + 5y = -16y
5 + -16y = 25 + -5y + 5y

Combine like terms: -5y + 5y = 0
5 + -16y = 25 + 0
5 + -16y = 25

Add '-5' to each side of the equation.
5 + -5 + -16y = 25 + -5

Combine like terms: 5 + -5 = 0
0 + -16y = 25 + -5
-16y = 25 + -5

Combine like terms: 25 + -5 = 20
-16y = 20

Divide each side by '-16'.
y = -1.25

Simplifying
y = -1.25

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