7=9-y

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Solution for 7=9-y equation:


Simplifying
7 = 9 + -1y

Solving
7 = 9 + -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 = 9 + -1y + y

Combine like terms: -1y + y = 0
7 + y = 9 + 0
7 + y = 9

Add '-7' to each side of the equation.
7 + -7 + y = 9 + -7

Combine like terms: 7 + -7 = 0
0 + y = 9 + -7
y = 9 + -7

Combine like terms: 9 + -7 = 2
y = 2

Simplifying
y = 2

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