3y-15=y+13

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Solution for 3y-15=y+13 equation:


Simplifying
3y + -15 = y + 13

Reorder the terms:
-15 + 3y = y + 13

Reorder the terms:
-15 + 3y = 13 + y

Solving
-15 + 3y = 13 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-15 + 3y + -1y = 13 + y + -1y

Combine like terms: 3y + -1y = 2y
-15 + 2y = 13 + y + -1y

Combine like terms: y + -1y = 0
-15 + 2y = 13 + 0
-15 + 2y = 13

Add '15' to each side of the equation.
-15 + 15 + 2y = 13 + 15

Combine like terms: -15 + 15 = 0
0 + 2y = 13 + 15
2y = 13 + 15

Combine like terms: 13 + 15 = 28
2y = 28

Divide each side by '2'.
y = 14

Simplifying
y = 14

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