y-1+2y=8

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Solution for y-1+2y=8 equation: 


Simplifying
y + -1 + 2y = 8

Reorder the terms:
-1 + y + 2y = 8

Combine like terms: y + 2y = 3y
-1 + 3y = 8

Solving
-1 + 3y = 8

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 + 3y = 8 + 1

Combine like terms: -1 + 1 = 0
0 + 3y = 8 + 1
3y = 8 + 1

Combine like terms: 8 + 1 = 9
3y = 9

Divide each side by '3'.
y = 3

Simplifying
y = 3

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