Question

the sum of 2 rational numbers is 3/7,if one of the number is -3/10 then the other number is​

Answer 1

Answer:

51/70 is the other rational number:

Step-by-step explanation:

given:

x + y = 3/7

let given rational be x which is equal to -3/10

then,

-3/10 + y = 3/7

= y = 3/7 +3/10

y = 51 /70

Answer 2

One of the number = $\frac{ - 3}{10}$

Let the other number be $x$.

As per the question,

Sum of two rational numbers = $\frac{ 3}{7}$

$\longrightarrow{\green{}}$ $\frac{ - 3}{10} + x = \frac{3}{7}$

Adding both sides by $\frac{ 3}{10}$ gives us

$\longrightarrow{\green{}}$ $x = \frac{3}{7} + \frac{ 3}{10}$

$\longrightarrow{\green{}}$ $x = \frac{3 \times 10}{7 \times 10} + \frac{3 \times 7}{10 \times 7}$

$\longrightarrow{\green{}}$ $x = \frac{30 + 21}{70}$

$\longrightarrow{\green{}}$ $x = \frac{51}{70}$

Therefore, the other number $x$ is $\boxed{ \frac{51}{70} }$.