3(-9)+2y=-15

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Solution for 3(-9)+2y=-15 equation: 


Simplifying
3(-9) + 2y = -15

Multiply 3 * -9
-27 + 2y = -15

Solving
-27 + 2y = -15

Solving for variable 'y'.

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

Add '27' to each side of the equation.
-27 + 27 + 2y = -15 + 27

Combine like terms: -27 + 27 = 0
0 + 2y = -15 + 27
2y = -15 + 27

Combine like terms: -15 + 27 = 12
2y = 12

Divide each side by '2'.
y = 6

Simplifying
y = 6

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