-y-6=-15

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Solution for -y-6=-15 equation: 


Simplifying
-1y + -6 = -15

Reorder the terms:
-6 + -1y = -15

Solving
-6 + -1y = -15

Solving for variable 'y'.

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

Add '6' to each side of the equation.
-6 + 6 + -1y = -15 + 6

Combine like terms: -6 + 6 = 0
0 + -1y = -15 + 6
-1y = -15 + 6

Combine like terms: -15 + 6 = -9
-1y = -9

Divide each side by '-1'.
y = 9

Simplifying
y = 9

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