3y-15=18

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Solution for 3y-15=18 equation: 


Simplifying
3y + -15 = 18

Reorder the terms:
-15 + 3y = 18

Solving
-15 + 3y = 18

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + 3y = 18 + 15

Combine like terms: -15 + 15 = 0
0 + 3y = 18 + 15
3y = 18 + 15

Combine like terms: 18 + 15 = 33
3y = 33

Divide each side by '3'.
y = 11

Simplifying
y = 11

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