3y+y=84

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Solution for 3y+y=84 equation: 


Simplifying
3y + y = 84

Combine like terms: 3y + y = 4y
4y = 84

Solving
4y = 84

Solving for variable 'y'.

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

Divide each side by '4'.
y = 21

Simplifying
y = 21

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