7y-11+y-3y=9

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Solution for 7y-11+y-3y=9 equation:


Simplifying
7y + -11 + y + -3y = 9

Reorder the terms:
-11 + 7y + y + -3y = 9

Combine like terms: 7y + y = 8y
-11 + 8y + -3y = 9

Combine like terms: 8y + -3y = 5y
-11 + 5y = 9

Solving
-11 + 5y = 9

Solving for variable 'y'.

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

Add '11' to each side of the equation.
-11 + 11 + 5y = 9 + 11

Combine like terms: -11 + 11 = 0
0 + 5y = 9 + 11
5y = 9 + 11

Combine like terms: 9 + 11 = 20
5y = 20

Divide each side by '5'.
y = 4

Simplifying
y = 4

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