90+-2.5y+y=18

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Solution for 90+-2.5y+y=18 equation: 


Simplifying
90 + -2.5y + y = 18

Combine like terms: -2.5y + y = -1.5y
90 + -1.5y = 18

Solving
90 + -1.5y = 18

Solving for variable 'y'.

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

Add '-90' to each side of the equation.
90 + -90 + -1.5y = 18 + -90

Combine like terms: 90 + -90 = 0
0 + -1.5y = 18 + -90
-1.5y = 18 + -90

Combine like terms: 18 + -90 = -72
-1.5y = -72

Divide each side by '-1.5'.
y = 48

Simplifying
y = 48

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