Solve for y
y=-\frac{1}{2}=-0.5
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-y-3y=-2+4
Add 4 to both sides.
-y-3y=2
Add -2 and 4 to get 2.
-4y=2
Combine -y and -3y to get -4y.
y=\frac{2}{-4}
Divide both sides by -4.
y=-\frac{1}{2}
Reduce the fraction \frac{2}{-4} to lowest terms by extracting and canceling out 2.
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