7y-1-2y=9

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Solution for 7y-1-2y=9 equation:


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

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

Combine like terms: 7y + -2y = 5y
-1 + 5y = 9

Solving
-1 + 5y = 9

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + 5y = 9 + 1

Combine like terms: -1 + 1 = 0
0 + 5y = 9 + 1
5y = 9 + 1

Combine like terms: 9 + 1 = 10
5y = 10

Divide each side by '5'.
y = 2

Simplifying
y = 2

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