16-21=y

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Solution for 16-21=y equation:


Simplifying
16 + -21 = y

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

Solving
-5 = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-5 + -1y = y + -1y

Combine like terms: y + -1y = 0
-5 + -1y = 0

Add '5' to each side of the equation.
-5 + 5 + -1y = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1y = 0 + 5
-1y = 0 + 5

Combine like terms: 0 + 5 = 5
-1y = 5

Divide each side by '-1'.
y = -5

Simplifying
y = -5

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