21-2y=16

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Solution for 21-2y=16 equation: 


Simplifying
21 + -2y = 16

Solving
21 + -2y = 16

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 + -2y = 16 + -21

Combine like terms: 21 + -21 = 0
0 + -2y = 16 + -21
-2y = 16 + -21

Combine like terms: 16 + -21 = -5
-2y = -5

Divide each side by '-2'.
y = 2.5

Simplifying
y = 2.5

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