Question

evaluate the following​

Answer 1

Step-by-step explanation:

1st

$\frac{ - 15}{12} + \frac{4}{12} + \frac{ - 4}{7}$

$= \frac{ - 11}{12} + \frac{ - 4}{7}$

$\frac{ - 77}{84} + \frac{ - 48}{84}$

= -125/84

2nd

$\frac{9}{24} - \frac{28}{24} - \frac{10}{24} \\ \frac{ - 19 + - 10}{24 } \\ \frac{ - 29}{24}$

3rd

$\frac{21}{36} - \frac{22}{36} + \frac{7}{24}$

= -1/36 + 7/24

= -2/72 + 21/72

= 19/72

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