3y-9=7-2y-y

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Solution for 3y-9=7-2y-y equation:


Simplifying
3y + -9 = 7 + -2y + -1y

Reorder the terms:
-9 + 3y = 7 + -2y + -1y

Combine like terms: -2y + -1y = -3y
-9 + 3y = 7 + -3y

Solving
-9 + 3y = 7 + -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
-9 + 3y + 3y = 7 + -3y + 3y

Combine like terms: 3y + 3y = 6y
-9 + 6y = 7 + -3y + 3y

Combine like terms: -3y + 3y = 0
-9 + 6y = 7 + 0
-9 + 6y = 7

Add '9' to each side of the equation.
-9 + 9 + 6y = 7 + 9

Combine like terms: -9 + 9 = 0
0 + 6y = 7 + 9
6y = 7 + 9

Combine like terms: 7 + 9 = 16
6y = 16

Divide each side by '6'.
y = 2.666666667

Simplifying
y = 2.666666667

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