20y-15=5y+90

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Solution for 20y-15=5y+90 equation:


Simplifying
20y + -15 = 5y + 90

Reorder the terms:
-15 + 20y = 5y + 90

Reorder the terms:
-15 + 20y = 90 + 5y

Solving
-15 + 20y = 90 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
-15 + 20y + -5y = 90 + 5y + -5y

Combine like terms: 20y + -5y = 15y
-15 + 15y = 90 + 5y + -5y

Combine like terms: 5y + -5y = 0
-15 + 15y = 90 + 0
-15 + 15y = 90

Add '15' to each side of the equation.
-15 + 15 + 15y = 90 + 15

Combine like terms: -15 + 15 = 0
0 + 15y = 90 + 15
15y = 90 + 15

Combine like terms: 90 + 15 = 105
15y = 105

Divide each side by '15'.
y = 7

Simplifying
y = 7

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