12=3y+4y-y

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


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

Combine like terms: 3y + 4y = 7y
12 = 7y + -1y

Combine like terms: 7y + -1y = 6y
12 = 6y

Solving
12 = 6y

Solving for variable 'y'.

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

Add '-6y' to each side of the equation.
12 + -6y = 6y + -6y

Combine like terms: 6y + -6y = 0
12 + -6y = 0

Add '-12' to each side of the equation.
12 + -12 + -6y = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -6y = 0 + -12
-6y = 0 + -12

Combine like terms: 0 + -12 = -12
-6y = -12

Divide each side by '-6'.
y = 2

Simplifying
y = 2

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