12-3-Y=9-4

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Solution for 12-3-Y=9-4 equation:


Simplifying
12 + -3 + -1Y = 9 + -4

Combine like terms: 12 + -3 = 9
9 + -1Y = 9 + -4

Combine like terms: 9 + -4 = 5
9 + -1Y = 5

Solving
9 + -1Y = 5

Solving for variable 'Y'.

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

Add '-9' to each side of the equation.
9 + -9 + -1Y = 5 + -9

Combine like terms: 9 + -9 = 0
0 + -1Y = 5 + -9
-1Y = 5 + -9

Combine like terms: 5 + -9 = -4
-1Y = -4

Divide each side by '-1'.
Y = 4

Simplifying
Y = 4

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