90=18y+30-5y-5

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Solution for 90=18y+30-5y-5 equation:


Simplifying
90 = 18y + 30 + -5y + -5

Reorder the terms:
90 = 30 + -5 + 18y + -5y

Combine like terms: 30 + -5 = 25
90 = 25 + 18y + -5y

Combine like terms: 18y + -5y = 13y
90 = 25 + 13y

Solving
90 = 25 + 13y

Solving for variable 'y'.

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

Add '-13y' to each side of the equation.
90 + -13y = 25 + 13y + -13y

Combine like terms: 13y + -13y = 0
90 + -13y = 25 + 0
90 + -13y = 25

Add '-90' to each side of the equation.
90 + -90 + -13y = 25 + -90

Combine like terms: 90 + -90 = 0
0 + -13y = 25 + -90
-13y = 25 + -90

Combine like terms: 25 + -90 = -65
-13y = -65

Divide each side by '-13'.
y = 5

Simplifying
y = 5

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