8y-9=40+y

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Solution for 8y-9=40+y equation:


Simplifying
8y + -9 = 40 + y

Reorder the terms:
-9 + 8y = 40 + y

Solving
-9 + 8y = 40 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-9 + 8y + -1y = 40 + y + -1y

Combine like terms: 8y + -1y = 7y
-9 + 7y = 40 + y + -1y

Combine like terms: y + -1y = 0
-9 + 7y = 40 + 0
-9 + 7y = 40

Add '9' to each side of the equation.
-9 + 9 + 7y = 40 + 9

Combine like terms: -9 + 9 = 0
0 + 7y = 40 + 9
7y = 40 + 9

Combine like terms: 40 + 9 = 49
7y = 49

Divide each side by '7'.
y = 7

Simplifying
y = 7

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