20+y=13

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Solution for 20+y=13 equation: 


Simplifying
20 + y = 13

Solving
20 + y = 13

Solving for variable 'y'.

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

Add '-20' to each side of the equation.
20 + -20 + y = 13 + -20

Combine like terms: 20 + -20 = 0
0 + y = 13 + -20
y = 13 + -20

Combine like terms: 13 + -20 = -7
y = -7

Simplifying
y = -7

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