Question

I think of a number. I add 7 to it and then divided it by 10 . My answer is 3.8. What number did I start with ?

Answer 1

Answer:

31

Step-by-step explanation:

let the number be x

x + 7 / 10 = 3.8

x + 7 = 38

x = 31

Answer 2

Answer:

eg:x

2x

2x+6

(2x+6)/2=x+3

x+3−x=3