Add. Do not use a number line except as a check.
-$-\frac{2}{5}+\frac{13}{15}$
A) $-\frac{7}{15}$
B) $\frac{19}{15}$
C) $-\frac{19}{15}$
D) $\frac{7}{15}$

Question

Quizplus · Accepted Answer

To add fractions, they must have a common denominator. The least common denominator (LCD) of 5 and 15 is 15. Convert $-\frac{2}{5}$ to $-\frac{6}{15}$ (by multiplying both numerator and denominator by 3). Then, add $-\frac{6}{15} + \frac{13}{15} = \frac{7}{15}$.

Add Do Not Use a Number Line Except as a Check