Question

Which of the following is a rational number?
(a) -2/3
(b) -1/5
(c) 13/5​

Answer 1

Step-by-step explanation:

All are rational

mark as Brainliest

Answer 2

Answer:

\begin{gathered}a. \: \frac{13}{5} + \frac{4}{5} = \frac{13 + 4}{5} = \frac{17}{5} \\ b. \: \frac{ - 3}{7} + \frac{ - 4}{7} = \frac{ - 3 - 4}{ 7} = \frac{ - 7}{7} = - 1 \\ c. \: \frac{9}{ - 8} + \frac{1}{8} = \frac{ - 9 + 1}{8} = \frac{ - 8}{8} = - 1 \\ d. \: \frac{ - 8}{11} + \frac{7}{ - 11} = \frac{ - 8 - 7}{11} = \frac{ - 15}{11} \end{gathered}

a.

5

13

+

5

4

=

5

13+4

=

5

17

b.

7

−3

+

7

−4

=

7

−3−4

=

7

−7

=−1

c.

−8

9

+

8

1

=

8

−9+1

=

8

−8

=−1

d.

11

−8

+

−11

7

=

11

−8−7

=

11

−15