7=15-Y

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Solution for 7=15-Y equation: 


Simplifying
7 = 15 + -1Y

Solving
7 = 15 + -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 = 15 + -1Y + Y

Combine like terms: -1Y + Y = 0
7 + Y = 15 + 0
7 + Y = 15

Add '-7' to each side of the equation.
7 + -7 + Y = 15 + -7

Combine like terms: 7 + -7 = 0
0 + Y = 15 + -7
Y = 15 + -7

Combine like terms: 15 + -7 = 8
Y = 8

Simplifying
Y = 8

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