78=15-5y

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Solution for 78=15-5y equation:


Simplifying
78 = 15 + -5y

Solving
78 = 15 + -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.
78 + 5y = 15 + -5y + 5y

Combine like terms: -5y + 5y = 0
78 + 5y = 15 + 0
78 + 5y = 15

Add '-78' to each side of the equation.
78 + -78 + 5y = 15 + -78

Combine like terms: 78 + -78 = 0
0 + 5y = 15 + -78
5y = 15 + -78

Combine like terms: 15 + -78 = -63
5y = -63

Divide each side by '5'.
y = -12.6

Simplifying
y = -12.6

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