Add or subtract as indicated.
-$- \frac { 3 } { 4 } - \frac { 5 } { 8 }$
A) $- \frac { 1 } { 4 }$
B) -1
C) $\frac { 11 } { 8 }$
D) $- \frac { 11 } { 8 }$

Question

Add or subtract as indicated.
-$- \frac { 3 } { 4 } - \frac { 5 } { 8 }$
A) $- \frac { 1 } { 4 }$
B)  -1 
C) $\frac { 11 } { 8 }$
D) $- \frac { 11 } { 8 }$

Quizplus · Accepted Answer

To add or subtract fractions, they must have a common denominator. The least common denominator of 4 and 8 is 8. Convert $-\frac{3}{4}$ to $-\frac{6}{8}$ and $-\frac{5}{8}$ remains the same. Adding $-\frac{6}{8} - \frac{5}{8}$ gives $-\frac{11}{8}$.

Add or Subtract as Indicated −34−58- \frac { 3 } { 4 } - \frac { 5 } { 8 }−43​−85​

Add or Subtract as Indicated $- \frac { 3 } { 4 } - \frac { 5 } { 8 }$