12-4-y-y=y+y+9+3

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Solution for 12-4-y-y=y+y+9+3 equation:


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

Combine like terms: 12 + -4 = 8
8 + -1y + -1y = y + y + 9 + 3

Combine like terms: -1y + -1y = -2y
8 + -2y = y + y + 9 + 3

Reorder the terms:
8 + -2y = 9 + 3 + y + y

Combine like terms: 9 + 3 = 12
8 + -2y = 12 + y + y

Combine like terms: y + y = 2y
8 + -2y = 12 + 2y

Solving
8 + -2y = 12 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
8 + -2y + -2y = 12 + 2y + -2y

Combine like terms: -2y + -2y = -4y
8 + -4y = 12 + 2y + -2y

Combine like terms: 2y + -2y = 0
8 + -4y = 12 + 0
8 + -4y = 12

Add '-8' to each side of the equation.
8 + -8 + -4y = 12 + -8

Combine like terms: 8 + -8 = 0
0 + -4y = 12 + -8
-4y = 12 + -8

Combine like terms: 12 + -8 = 4
-4y = 4

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

Simplifying
y = -1

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