Question

one number is 8 more than a second number. the sum of the two numbers is 18. find the numbers...... ans is 5,13 how explain

Answer 1

let the second no be x. first no x+8
so x+x+8=18
or 2x+8=18
or,2x=18-8
or,x= 10/2=5
so first no 8+5=13

Answer 2

x=y+8
x-y=8 ..........................(1)

x+y=18.........................(2)
vilopan vidhi se
x-y=8
x+y=18
----------- jodne per
2x+0=26
2x=26/2
x=13 ans.

put the value of X in equation (1)
x-y=8
13-y=8
y=13-8
y=5 ans.