Question

7a+15a a=3

44a-18a a=5

52m-25m+45m m=9

Answer 1

22а=22×3=66
26а=26×5=130
72m=72×9=648

Answer 2

7а+15а,а=3
7х3+15х3=21+45=66

44а-18а,а=5
44х5-18х5=220-90=130

52м-25м+45м,м=9
72м х 9=648

Answer 3

22а=22×3=66
26а=26×5=130
72m=72×9=648

Answer 4

вот так надо