3y+a=15

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Solution for 3y+a=15 equation: 


Simplifying
3y + a = 15

Reorder the terms:
a + 3y = 15

Solving
a + 3y = 15

Solving for variable 'a'.

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

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

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

Simplifying
a = 15 + -3y

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