18:3=6
3×4=12
6+12=18~~~~~~~
9999*9999= ответ 99980001
1) x – 25 = 60
x = 60 + 25
x = 85
Проверка: 85 – 25 = 60
60 = 60
2) 73 – x = 40
x = 73 – 40
x = 33
Проверка: 73 – 33 = 40
40 = 40
3) 52 + у = 91
у = 91 – 52
у = 39
Проверка: 52 + 39 = 91
91 = 91
550000-138000=412000
550000+412000=962000
ответ