7=23-y

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Solution for 7=23-y equation: 


Simplifying
7 = 23 + -1y

Solving
7 = 23 + -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.
7 + y = 23 + -1y + y

Combine like terms: -1y + y = 0
7 + y = 23 + 0
7 + y = 23

Add '-7' to each side of the equation.
7 + -7 + y = 23 + -7

Combine like terms: 7 + -7 = 0
0 + y = 23 + -7
y = 23 + -7

Combine like terms: 23 + -7 = 16
y = 16

Simplifying
y = 16

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