6y+12-9=15

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Solution for 6y+12-9=15 equation: 


Simplifying
6y + 12 + -9 = 15

Reorder the terms:
12 + -9 + 6y = 15

Combine like terms: 12 + -9 = 3
3 + 6y = 15

Solving
3 + 6y = 15

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 6y = 15 + -3

Combine like terms: 3 + -3 = 0
0 + 6y = 15 + -3
6y = 15 + -3

Combine like terms: 15 + -3 = 12
6y = 12

Divide each side by '6'.
y = 2

Simplifying
y = 2

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