Add or subtract as indicated. Write the answer in lowest terms.
-$15 \frac { 2 } { 7 } - 7 \frac { 4 } { 7 }$
A) $7 \frac { 5 } { 7 }$
B) $22 \frac { 5 } { 7 }$
C) $7 \frac { 4 } { 7 }$
D) $21 \frac { 5 } { 7 }$

Question

Quizplus · Accepted Answer

To subtract the given fractions, subtract the whole numbers and the fractional parts separately: $15 - 7 = 8$ and $\frac{2}{7} - \frac{4}{7} = -\frac{2}{7}$. Since the fractional part is negative, subtract 1 from the whole number part and add the denominator to the numerator: $8 - 1 = 7$ and $-2 + 7 = 5$, resulting in $7 \frac{5}{7}$.

Add or Subtract as Indicated 1527−74715 \frac { 2 } { 7 } - 7 \frac { 4 } { 7 }1572​−774​

Add or Subtract as Indicated $15 \frac { 2 } { 7 } - 7 \frac { 4 } { 7 }$