Question

what should be added to five - seventh of rational number -3/5 ;so that it becomes 3/7?

Answer 1

Let the rational number be " x " .

5/7(-3/5) + x = 3/7

15(-35) + x = 3/7

-3/7 + x = 3/7

x = 3/7 + 3/7 = 6/7

Therefore, the required number is 6/7 .

Answer 2

Hellooooo....

Answer :- Rational no. be x

$5 \div 7( - 3 \div 5) + x = 3 \div 7$
$15( - 35) + x = 3 \div 7$
$- 3 \div 7 + x = 3 \div 7$
$x = 3 \div 7 + 3 \div 7 = 6 \div 7$