Предмет: Математика, автор: aleksandrasidl45

как сделать ребят я жду срочно надо хсхвхвхвэвээаа ​

Приложения:
laptievye: 7-2=5

Ответы

Автор ответа: vikaafmobNika
0

Відповідь:

Для 7: 1 +6 =7 7 - 6=1

6+1 = 7 7 - 1=6

Пояснення: для 7 вибираємо

7= 1+ 6 та 7= 6+1.

 7- 6=1

7- 1=6

Для 70 :

50+20 =70 70-20=50

20+50=70 70-50=20

Покрокове пояснення:

Для 70 вибираємо 70=50+20 та

70=20+50

Складемо різниці:

70-20=50

70-50=20

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