6+15=3y-15

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Solution for 6+15=3y-15 equation: 


Simplifying
6 + 15 = 3y + -15

Combine like terms: 6 + 15 = 21
21 = 3y + -15

Reorder the terms:
21 = -15 + 3y

Solving
21 = -15 + 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.
21 + -3y = -15 + 3y + -3y

Combine like terms: 3y + -3y = 0
21 + -3y = -15 + 0
21 + -3y = -15

Add '-21' to each side of the equation.
21 + -21 + -3y = -15 + -21

Combine like terms: 21 + -21 = 0
0 + -3y = -15 + -21
-3y = -15 + -21

Combine like terms: -15 + -21 = -36
-3y = -36

Divide each side by '-3'.
y = 12

Simplifying
y = 12

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