Вставить пропущенные числа. 63+( *-72)=63 *+(9-9)=15 (*-5)+5=70 40+22-*+40=80

1) 63 + (* - 72) = 63;

* - 72 = 63 - 63;

* - 72 = 0;

* = 72 + 0;

* = 72.

Проверим: 63 + (72 - 72) = 63;

63 + 0 = 63;

63 = 63.

2) * + (9 - 9) = 15;

* + 0 = 15;

* = 15 - 0;

* = 15.

Проверка: 15 + (9 - 9) = 15;

15 + 0 = 15;

15 = 15.

3) (* - 5) + 5 = 70;

* - 5 = 70 - 5;

* - 5 = 65;

* = 65 + 5;

* = 70.

Проверка: (70 - 5) + 5 = 70;

65 + 5 = 70;

70 = 70.

4) 40 + 22 - * + 40 = 80;

62 - * + 40 = 80;

- * + 62 + 40 = 80;

- * + 102 = 80;

- * = 80 - 102;

- * = - 22;

* = 22.

Проверим: 40 + 22 - 22 + 40 = 80;

80 = 80.