Question

The sum of two rational numbers is −3/5 . If one of them is −9/20, find the other.

Answer 1

Answer:

$-\frac{3}{20}$

Step-by-step explanation:

GIVEN :-

• One of the two rational numbers = $-\frac{9}{20}$  

TO FIND :-

• Sum of two rational numbers = $-\frac{3}{5}$

SOLUTION :-

Let the another rational number be 'x'.

According to the question , the equation formed will look like this :-

$x + (-\frac{9}{20} ) = -\frac{3}{5}$

$=> x - \frac{9}{20} = -\frac{3}{5}$

Now solve the equation.

• Add  $\frac{9}{20}$ to both the sides of equation in order to isolate 'x'.

$=> x - \frac{9}{20} + \frac{9}{20} = -\frac{3}{5} + \frac{9}{20}$

$=> x = \frac{9}{20} - \frac{3}{5} = \frac{9 - (3 \times 4)}{20} = \frac{9 - 12}{20} = \frac{-3}{20}$

Answer 2

Answer:

-3/20

Step-by-step explanation:

Let other number = x

∴ -9/20 + x = -3/5

∴ x = -3/5 + 9/20

∴ x = -3/20

Hope this helps  :) !!!!