Question

3a, 21ab find the common factor​

Answer 1

Answer:

1/7

Step-by-step explanation:

3a=21ab

b=1/7

hence 1/7 is thale answer

Answer 2

Answer:

common factors are a and 3a

Step-by-step explanation:

$3a = 3 \times a \\ = 1 \times 3 \times a \\ 1 \times 3a \\ \\ 21ab = 3 \times 7 \times b \\ 3 \times a \times 7b \\ 3 \times a \times 7 \times b$

hence factors are a and 3a......