Question

add the following rational number 2/3and-3/5​

Answer 1

➤ Answer :-

$\dashrightarrow \tt \frac{2}{3} + \frac{( - 3)}{5}$

LCM of 3 and 5 is 15.

$\dashrightarrow \tt \frac{2 \times 5}{3 \times 5} + \frac{( - 3) \times 3}{5 \times 3}$

$\dashrightarrow \tt \frac{10}{15} + \frac{( - 9)}{15} = \frac{10 + ( - 9)}{15}$

$\dashrightarrow \tt \frac{10 - 9}{15}$

$\dashrightarrow \tt \frac{1}{15}$

$\Huge\therefore$The answer is $\tt\frac{1}{15}$

Answer 2

Answer:

1/15

Step-by-step explanation:

First find the LCM of 3 and 5.

It is 15 as you can see.

So, now, it becomes (10-9)/15 = 1/15

How does 10 and 9 comes?

Well, here, first you divide 15 by 3. It is 5. then you multiply it with 2. How much? 10, isn't it?

Same for 9. Divide 15 by 5 and then multiply the result with 3.

Basically, you divide the LCM with the denominator, and then multiply the result with the numerator.