54=12y-3y

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Solution for 54=12y-3y equation:


Simplifying
54 = 12y + -3y

Combine like terms: 12y + -3y = 9y
54 = 9y

Solving
54 = 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
54 + -9y = 9y + -9y

Combine like terms: 9y + -9y = 0
54 + -9y = 0

Add '-54' to each side of the equation.
54 + -54 + -9y = 0 + -54

Combine like terms: 54 + -54 = 0
0 + -9y = 0 + -54
-9y = 0 + -54

Combine like terms: 0 + -54 = -54
-9y = -54

Divide each side by '-9'.
y = 6

Simplifying
y = 6

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