15=7-5y

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Solution for 15=7-5y equation: 


Simplifying
15 = 7 + -5y

Solving
15 = 7 + -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
15 + 5y = 7 + -5y + 5y

Combine like terms: -5y + 5y = 0
15 + 5y = 7 + 0
15 + 5y = 7

Add '-15' to each side of the equation.
15 + -15 + 5y = 7 + -15

Combine like terms: 15 + -15 = 0
0 + 5y = 7 + -15
5y = 7 + -15

Combine like terms: 7 + -15 = -8
5y = -8

Divide each side by '5'.
y = -1.6

Simplifying
y = -1.6

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