Question

Q.10 (2/5 +3/5)+ (7/5-4/10)
(a) 1 (b) 0 (c) 3/5 (d) 5/7​

Answer 1

Answer:

Step-by-step explanation:

(a) 1

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Answer 2

Answer:

The answer is

One of the option is given wrong because answer is surely 2

You can check my explanation mate

Step-by-step explanation:

= $(\frac{2}{5} + \frac{3}{5}) + (\frac{7}{5} - \frac{4}{10})$

= $(\frac{2 + 3}{5}) + (\frac{7}{5} - \frac{4}{10} )$

= $(\frac{5}{5}) + (\frac{7}{5} - \frac{4}{10})$

Now take L.C.M of the denominators 5 and 10

That is 10

So,

$\frac{7}{5} X \frac{2}{2} and \frac{4}{10} X \frac{1}{1}$ [To make the denominators equal]

$\frac{14}{10} and \frac{4}{10}$

Continue

= $(\frac{5}{5}) + (\frac{14}{10} - \frac{4}{10})$

= $(\frac{5}{5}) + (\frac{14 - 4}{10})$

=  $\frac{5}{5} + \frac{10}{10}$

Now take L.C.M of the denominators 5 and 10

That is 10

So,

$\frac{5}{5} X \frac{2}{2} and \frac{10}{10} X \frac{1}{1}$ [To make the denominators equal]

$\frac{10}{10} and \frac{10}{10}$

CONTINUE

=  $\frac{10}{10} + \frac{10}{10}$

=  $\frac{10 + 10}{10}$

= $\frac{20}{10}$

= 2(Answer)