| 7 | 7 | |||
85 | = 85 + | |||
| 30 | 30 |
| 5 | 5 | |||
83 | = 83 + | |||
| 18 | 18 |
| 7 | 5 | 7 | 5 | |||||
85 | − 83 | = 85 + | − (83 + | ) = | ||||
| 30 | 18 | 30 | 18 |
| 7 | 5 | 90*2 | 3*7 | 5*5 | ||||||
= 2 + | − | = | + | − | = | |||||
| 30 | 18 | 90 | 3*30 | 5*18 |
| 180 + 21 − 25 | 176 | 88 | ||||
= | = | = | ||||
| 90 | 90 | 45 |
| 2 | 2*3 + 2 | 8 | ||||
2 | = | = | ||||
| 3 | 3 | 3 |
| 88 | 8 | 88 | 3 | 88*3 | 11*1 | 11 | |||||||
: | = | * | = | = | = | ||||||||
| 45 | 3 | 45 | 8 | 45*8 | 15*1 | 15 |
| 7 | 5 | |||
Nie rozumiem części zadania rozpoczynającej się do 85 | − 83 | |||
| 30 | 18 |
| 7 | 5 | 7 | 5 | |||||
85 | − 83 | = 85 + | − 83 − | |||||
| 30 | 18 | 30 | 18 |