Question

find the sum of 1/-15 - 1/20​

Answer 1

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$\frac{1}{ - 15} - \frac{1}{20} \\ \\ = \frac{ - 1}{15} - \frac{1}{20} \\ \\ = \frac{ - 4 - 3}{60} \\ \\ = \frac{ - 7}{60}$

Answer 2

Answer:

1

−

20

1

=

15

−1

−

20

1

=

60

−4−3

=

60

−7