Answer:
you are multiplying by 7
Step-by-step explanation:
so like 3 x 7 = 21
4 x 7 = 28
6 x 7 = 42
9 x 7 = 63
10 x 7 = 70
hope it helps
7,9
3x4=21
4x7=28
6x7=42
9x7=64
10x7=70
