9-4y=15

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Solution for 9-4y=15 equation: 


Simplifying
9 + -4y = 15

Solving
9 + -4y = 15

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + -4y = 15 + -9

Combine like terms: 9 + -9 = 0
0 + -4y = 15 + -9
-4y = 15 + -9

Combine like terms: 15 + -9 = 6
-4y = 6

Divide each side by '-4'.
y = -1.5

Simplifying
y = -1.5

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