6-y-9=12

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Solution for 6-y-9=12 equation:


Simplifying
6 + -1y + -9 = 12

Reorder the terms:
6 + -9 + -1y = 12

Combine like terms: 6 + -9 = -3
-3 + -1y = 12

Solving
-3 + -1y = 12

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + -1y = 12 + 3

Combine like terms: -3 + 3 = 0
0 + -1y = 12 + 3
-1y = 12 + 3

Combine like terms: 12 + 3 = 15
-1y = 15

Divide each side by '-1'.
y = -15

Simplifying
y = -15

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