Respuesta :

an easy way (you must put the numbers in the correct side)

3 2 you cant subtract 5 from 2 so u carry one
-1 5 the 3

2 ¹3. it should look like this.Now u do 13-5=8
-1 5

2 ¹3. now u do 2-1=1
- 1 5
= 1 8

your final answer is 18.