Question

What should be added to thrice of a rational number minus -7/9 to get 3/7

Answer 1

Answer:

Given:

We have been given two numbers : -7/9 and 3/7.

To Find:

We neee to find a number(x) which should be added to thrice a rational number -7/9 so that we get 3/7.

Solution:

Let the number be x.

According to question:

x + {3 × (-7/3)} = 3/7

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

=> x - 7 = 3/7

=> x = 3/7 + 7

=> x = (3 + 49)/7 [Taking LCM as 7]

=> x = 52/7

Hence the required number is 52/7.

Answer 2

Answer:

Given:

Two numbers : -7/9 and 3/7.

To Find:

A number which should be added to thrice a number minus -7/9 so that we get 3/7.

Solution:

Let the number be x.

x + {3 × (-7/3)} = 3/7

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

=> x - 7 = 3/7

=> x = 3/7 + 7

=> x = (3 + 49)/7

=> x = 52/7

Required number = 52/7.