5=7-y

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Solution for 5=7-y equation: 


Simplifying
5 = 7 + -1y

Solving
5 = 7 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
5 + y = 7 + -1y + y

Combine like terms: -1y + y = 0
5 + y = 7 + 0
5 + y = 7

Add '-5' to each side of the equation.
5 + -5 + y = 7 + -5

Combine like terms: 5 + -5 = 0
0 + y = 7 + -5
y = 7 + -5

Combine like terms: 7 + -5 = 2
y = 2

Simplifying
y = 2

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