Question

13.The sum of two numbers is 21. If their sum is one more than four times of their
difference, find the numbers.​

Answer 1

Answer:

let the number be x

second number = 21-x

4(21-x-x)+1=21

4(21-2x)+1=21

84-8x+1=21

85-8x=21

-8x=21-85

-8x=-64

x=-64/-8

x=8

21-x=13