Question

the sum and difference of two numbers are 29 and 1 .then find the number

Answer 1

first no. x and second no.be y then x+y = 29and x- y = 1 substituted the equation x=15 and y= 14

Answer 2

let first no is x and second no is y .
a.t.q
       x+y=29             ..............(1)
       x-y=1               ...............(2)
by substraction method,
(1)..........x+y=29
(2)..........x-y=1
              ----------
               2x=30
                x=30/2=15      ............(3)
put (3) in (2),
              15-y=1
                  -y=1-15
                    y=14