12+1y+3y=28

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Solution for 12+1y+3y=28 equation: 


Simplifying
12 + 1y + 3y = 28

Combine like terms: 1y + 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 = 16
4y = 16

Divide each side by '4'.
y = 4

Simplifying
y = 4

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