Question

Evalute :-
(i) 2/5-(-3/7)+1/5+5/7+5
(ii) 4/21-5/7+9/4+11/6-3

Pls solve fast urgent

Answer 1

this is your 1 answers

Answer 2

Hey friend,
Here is the answer you were looking for:
$1) \\ \frac{2}{5} - ( - \frac{3}{7}) + \frac{1}{5} + \frac{5}{7} + 5 \\ \\ = \frac{2}{5} + \frac{3}{7} + \frac{1}{5} + \frac{5}{7} + 5 \\ \\ taking \: lcm \: we \: get \\ \\ \frac{2 \times 7 + 3 \times 5 + 1 \times 7 + 5 \times 5 + 5 \times 35}{35} \\ \\ = \frac{14 + 15 + 7 + 25 + 175}{35} \\ \\ = \frac{236}{35} \\ \\ in \: decimal \: = 6.74 \\ \\ 2) \\ \frac{4}{21} - \frac{5}{7} + \frac{9}{4} + \frac{11}{6} - 3 \\ \\ = \frac{4 \times 4 - 5 \times 12 + 9 \times 24 + 11 \times 14 - 3 \times 84}{84} \\ \\ = \frac{16 - 60 + 216 + 154 - 252}{84} \\ \\ = \frac{74}{84} \\ \\ = \frac{37}{42} \\ \\ in \: decimal \\ = 0.88$

Hope this helps!!!

@Mahak24

Thanks...
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