3y-(-15)=-9

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Solution for 3y-(-15)=-9 equation: 


Simplifying
3y + -1(-15) = -9

Multiply -1 * -15
3y + 15 = -9

Reorder the terms:
15 + 3y = -9

Solving
15 + 3y = -9

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 = -9 + -15

Combine like terms: 15 + -15 = 0
0 + 3y = -9 + -15
3y = -9 + -15

Combine like terms: -9 + -15 = -24
3y = -24

Divide each side by '3'.
y = -8

Simplifying
y = -8

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