Question

using suitable rearrangement find the sum 13/5+21/8+(-6/5)+(-1/8)​

Answer 1

Answer:

39 /10

Explanation:

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Answer 2

The question is we have to find the sum of expression by the suitable rearrangement.

The given expression is

$\frac{13}{5} + \frac{21}{8} + \frac{ - 6}{5} + \frac{ - 1}{8}$

The rearrangement for the expression is

$\frac{13}{5} + \frac{ - 6}{5} + \frac{21}{8} + \frac{ - 1}{8}$

$( \frac{13 - 6}{5} ) + ( \frac{21 - 1}{8} ) \\ = \frac{7}{5} + \frac{20}{8} \\ = \frac{56 + 100}{40} \\ = \frac{156}{40} \\ = \frac{39}{10} \\ = 3.9$

Therefore, the final answer is 3.9

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