7.5-y=9

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Solution for 7.5-y=9 equation: 


Simplifying
7.5 + -1y = 9

Solving
7.5 + -1y = 9

Solving for variable 'y'.

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

Add '-7.5' to each side of the equation.
7.5 + -7.5 + -1y = 9 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + -1y = 9 + -7.5
-1y = 9 + -7.5

Combine like terms: 9 + -7.5 = 1.5
-1y = 1.5

Divide each side by '-1'.
y = -1.5

Simplifying
y = -1.5

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