12=9y-5y-4

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Solution for 12=9y-5y-4 equation:


Simplifying
12 = 9y + -5y + -4

Reorder the terms:
12 = -4 + 9y + -5y

Combine like terms: 9y + -5y = 4y
12 = -4 + 4y

Solving
12 = -4 + 4y

Solving for variable 'y'.

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

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

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

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

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

Combine like terms: -4 + -12 = -16
-4y = -16

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

Simplifying
y = 4

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