Question

simplify 2/5 +3/7+(-6/5)+(-13/7)​

Answer 1

Answer:

$\frac{2}{5} + \frac{3}{7} - \frac{6}{5} - \frac{ 13}{7 } \\ = \frac{ - 4}{5} - \frac{10}{7} \\ = \frac{ - 28 - 50}{35} \\ = \frac{ - 78}{35}$

Answer 2

Answer:

Rearrange the given fractions keeping similar fractions together.

2/5±3/7±(-6/5)±(-13/7)=2/5±3/7-6/5-13/7

=(2/5-6/5)±(3/7-13/7) by commutative law of addition.

=2-6/5±3-13/7

=-4/5±-10/7=-4/5-10/7

=-4×7-10×5/35=-28-50/35=-78/35

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