Question

Find two numbers whose sum is 7 and the difference is 2 ?​

Answer 1

answer:

x+y=7 ..(1)

x-y= 2. ...(2)

adding equation (1) and (2), we get

x+y=7

x-y=2

_____

2x=9

x=9/2 =4.5

substituting the value x in equation (1)

we get,

4.5+y=7

y=7-4.5

y=2.5

rhere for x=4.5 and y=2.5

hence the 2 number are 4.5 and 2.5