Add or subtract as indicated and simplify if possible.
-$$\frac { 1 } { 6 y ^ { 2 } } + \frac { - 7 } { 8 y }$$
A) $\frac { - 21 y + 4 } { 24 y ^ { 2 } }$
B) $\frac { - 17 } { 24 y ^ { 2 } }$
C) $\frac { - 6 } { 48 y ^ { 3 } }$
D) $\frac { - 6 } { 14 y ^ { 3 } }$

Question

Quizplus · Accepted Answer

To add or subtract fractions, they must have a common denominator. The least common denominator (LCD) of $6y^2$ and $8y$ is $24y^2$. Convert each fraction to have this denominator: $\frac{1}{6y^2} = \frac{4}{24y^2}$ and $\frac{-7}{8y} = \frac{-21y}{24y^2}$. Adding these gives $\frac{4 - 21y}{24y^2} = \frac{-21y + 4}{24y^2}$.

Add or Subtract as Indicated and Simplify If Possible 16y2+−78y\frac { 1 } { 6 y ^ { 2 } } + \frac { - 7 } { 8 y }6y21​+8y−7​

Add or Subtract as Indicated and Simplify If Possible $\frac { 1 } { 6 y ^ { 2 } } + \frac { - 7 } { 8 y }$