Question

the sum of two rational numbers is -4/5 if one of them is 3/10, find other​

Answer 1

Answer:

Step-by-step explanation:

∵ The sum of two rational numbers = -2/3

And, one of the numbers = -8/15

∴ The other rational numbers

= (-2/3) – (-8/15)

∴ LCM of 3 and 15 = 15

= (-2 × 5)/(3 × 5) + (8 × 1)/(15 × 1)

(∵ LCM of 3 and 15 = 15)

= (-10 + 8)/15 = -2/15

Answer 2

Step-by-step explanation:

Let the other number be x .

so, According to Question,

$\rm \frac{ 3}{10} + x = \frac{ - 4}{5}$

$\rm⇒x = \frac{ - 4}{5} - \frac{3}{10}$

⍟ Taking L.C.M for 5,10 = 10

$\rm⇒x = \frac{ - 8 - 3}{10}$

$\rm⇒x = \frac{ - 11}{10}$

FINAL ANSWER :

The Other number is -11/10