13-y=-21

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Solution for 13-y=-21 equation: 


Simplifying
13 + -1y = -21

Solving
13 + -1y = -21

Solving for variable 'y'.

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

Add '-13' to each side of the equation.
13 + -13 + -1y = -21 + -13

Combine like terms: 13 + -13 = 0
0 + -1y = -21 + -13
-1y = -21 + -13

Combine like terms: -21 + -13 = -34
-1y = -34

Divide each side by '-1'.
y = 34

Simplifying
y = 34

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