y-3y=20

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Solution for y-3y=20 equation: 


Simplifying
y + -3y = 20

Combine like terms: y + -3y = -2y
-2y = 20

Solving
-2y = 20

Solving for variable 'y'.

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

Divide each side by '-2'.
y = -10

Simplifying
y = -10

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