-y-3y=-7

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Solution for -y-3y=-7 equation: 


Simplifying
-1y + -3y = -7

Combine like terms: -1y + -3y = -4y
-4y = -7

Solving
-4y = -7

Solving for variable 'y'.

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

Divide each side by '-4'.
y = 1.75

Simplifying
y = 1.75

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