Question

solve it by opening full pic
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Answer 1

$\huge{\textsf{\underline{\underline{SOLUTION:-}}}}$

Given that ,

$\frac{ - 1}{5} - \frac{4}{7} - \frac{5}{21} + \frac{1}{8}$

Now write all the numerators above the least common factor (LCM) 840

$\frac{ - 168 - 480 - 200 + 105}{840}$

Calculate the sum or difference

$\frac{ - 743}{840}$

Alternatively , it can be written as

$- 0.884524$

Therefore ,

$\frac{ - 1}{5} - \frac{4}{7} - \frac{5}{21} + \frac{1}{8} = \frac{ - 743}{840}$