Perform the indicated operation. Express your answer in simplest form.
-$\frac { - 2 } { 45 } - \frac { 3 } { 40 }$
A) $\frac { - 43 } { 360 }$
B) $\frac { - 1 } { 1800 }$
C) $\frac { - 360 } { 43 }$
D) $\frac { 43 } { 9 }$

Question

Quizplus · Accepted Answer

To add or subtract fractions, they must have a common denominator. The least common multiple (LCM) of 45 and 40 is 360. Convert each fraction to have this common denominator: $\frac{-2}{45} = \frac{-2 \times 8}{45 \times 8} = \frac{-16}{360}$ and $\frac{3}{40} = \frac{3 \times 9}{40 \times 9} = \frac{27}{360}$. Then, $\frac{-16}{360} - \frac{27}{360} = \frac{-16 - 27}{360} = \frac{-43}{360}$.

Perform the Indicated Operation −245−340\frac { - 2 } { 45 } - \frac { 3 } { 40 }45−2​−403​

Perform the Indicated Operation $\frac { - 2 } { 45 } - \frac { 3 } { 40 }$