Question

A rational number is such that when you multiply it by 5/2 and add 2/3 to the product you get -7/12. What is the number?


Class 8 Maths NCERT CH 2 ex-2.2 q13

Answer 1

Answer:

Let the rational be ‘n’.

According to the given details the equation becomes

n × (5/2) + 2/3 = -7/12

5(n/2) + 2/3 = -7/12

5(n/2) = -7/12 – 2/3

5(n/2) = (-7- 8)/12

5(n/2) = -15/12

5n/2 = -5/4

n = (-5/4) × (2/5)

n = – 10/20

n = -1/2

Therefore, the rational number will be -1/2.

Step-by-step explanation:

I hope the answer is correct