3y-15=18-8y

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Solution for 3y-15=18-8y equation:


Simplifying
3y + -15 = 18 + -8y

Reorder the terms:
-15 + 3y = 18 + -8y

Solving
-15 + 3y = 18 + -8y

Solving for variable 'y'.

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

Add '8y' to each side of the equation.
-15 + 3y + 8y = 18 + -8y + 8y

Combine like terms: 3y + 8y = 11y
-15 + 11y = 18 + -8y + 8y

Combine like terms: -8y + 8y = 0
-15 + 11y = 18 + 0
-15 + 11y = 18

Add '15' to each side of the equation.
-15 + 15 + 11y = 18 + 15

Combine like terms: -15 + 15 = 0
0 + 11y = 18 + 15
11y = 18 + 15

Combine like terms: 18 + 15 = 33
11y = 33

Divide each side by '11'.
y = 3

Simplifying
y = 3

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