-2-7=y

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Solution for -2-7=y equation:


Simplifying
-2 + -7 = y

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

Solving
-9 = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-9 + -1y = y + -1y

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

Add '9' to each side of the equation.
-9 + 9 + -1y = 0 + 9

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

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

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

Simplifying
y = -9

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