Question

Complecteaza casetele libere: 13-..=7,..-25=75,25-..=5, 13-..=9.Urgent.

Answer 1

13 - x =7
x=13-7 = 6
13 - 6 = 7

x-25 = 75
x=75+25 = 100
100 - 25 = 75 

25-x = 5
x=25-5 = 20
25 - 20 = 5 

13-x=9
x=13-7 =4 
13 - 4 = 9