Question

вычисли значения разностей нужно расписать

74-5,42-8 ,32-17,82-55,45-27,63-46,71-17,63-39. 

 

Answer 1

74–5=60+(14–5)=69
42–8=30+(12–8)=34
32–17=(20–10)+(12–7)=15
82–55=(70–50)+(12–5)=27
45–27=(30–20)+(15–7)=18
63–46=(50–40)+(13–6)=17
71–17=(60–10)+(11–7)=54
63–39=(50–30)+(13–9)=24