-4*9+3y+y=12

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


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

Multiply -4 * 9
-36 + 3y + y = 12

Combine like terms: 3y + y = 4y
-36 + 4y = 12

Solving
-36 + 4y = 12

Solving for variable 'y'.

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

Add '36' to each side of the equation.
-36 + 36 + 4y = 12 + 36

Combine like terms: -36 + 36 = 0
0 + 4y = 12 + 36
4y = 12 + 36

Combine like terms: 12 + 36 = 48
4y = 48

Divide each side by '4'.
y = 12

Simplifying
y = 12

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