3y=y-1

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Solution for 3y=y-1 equation: 


Simplifying
3y = y + -1

Reorder the terms:
3y = -1 + y

Solving
3y = -1 + 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.
3y + -1y = -1 + y + -1y

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

Combine like terms: y + -1y = 0
2y = -1 + 0
2y = -1

Divide each side by '2'.
y = -0.5

Simplifying
y = -0.5

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