12=6y+18-9y

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Solution for 12=6y+18-9y equation:


Simplifying
12 = 6y + 18 + -9y

Reorder the terms:
12 = 18 + 6y + -9y

Combine like terms: 6y + -9y = -3y
12 = 18 + -3y

Solving
12 = 18 + -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
12 + 3y = 18 + -3y + 3y

Combine like terms: -3y + 3y = 0
12 + 3y = 18 + 0
12 + 3y = 18

Add '-12' to each side of the equation.
12 + -12 + 3y = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 3y = 18 + -12
3y = 18 + -12

Combine like terms: 18 + -12 = 6
3y = 6

Divide each side by '3'.
y = 2

Simplifying
y = 2

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