3y-4y=20

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Solution for 3y-4y=20 equation: 


Simplifying
3y + -4y = 20

Combine like terms: 3y + -4y = -1y
-1y = 20

Solving
-1y = 20

Solving for variable 'y'.

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

Divide each side by '-1'.
y = -20

Simplifying
y = -20

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