-12+y+3y=28

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Solution for -12+y+3y=28 equation: 


Simplifying
-12 + y + 3y = 28

Combine like terms: y + 3y = 4y
-12 + 4y = 28

Solving
-12 + 4y = 28

Solving for variable 'y'.

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

Add '12' to each side of the equation.
-12 + 12 + 4y = 28 + 12

Combine like terms: -12 + 12 = 0
0 + 4y = 28 + 12
4y = 28 + 12

Combine like terms: 28 + 12 = 40
4y = 40

Divide each side by '4'.
y = 10

Simplifying
y = 10

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