Question

the product of two numbers is 105. if one number is 7what is the other

Answer 1

one number is 7 then,
let other number be x ,
7×X = 105
x= 105/7
X = 15

Answer 2

let 1 no. be x
2 no.=7
product of numbers =105
7×x=105
x=105/7=15
your answer is 15