5y-15-y=18

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Solution for 5y-15-y=18 equation:


Simplifying
5y + -15 + -1y = 18

Reorder the terms:
-15 + 5y + -1y = 18

Combine like terms: 5y + -1y = 4y
-15 + 4y = 18

Solving
-15 + 4y = 18

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + 4y = 18 + 15

Combine like terms: -15 + 15 = 0
0 + 4y = 18 + 15
4y = 18 + 15

Combine like terms: 18 + 15 = 33
4y = 33

Divide each side by '4'.
y = 8.25

Simplifying
y = 8.25

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