Напишите письмо воображаемому друг пригласите его в Россию

4/7=6/x

4x=7*6

x=42/4

x=21/2

10.5 долек

6 порций × 4 порций=20 порций

20 порций : на 4 человека=5 долек шоколада им потребуется.

1) did not we?

2) are not they? : )

1. haven't played; was

2. visited; went

3. have, choosen; bought

4. have, seen; watched 

5. forgot, didn't said 

6. has broken; fell

7. did you sell; saw, have bought

8. finished, painted, put up

9. have lost; ran

х_х