Question

9. Factorise:
7x – 42​

Answer 1

Answer:

7x=7*x

42=2*3*7

7 is only the common factor

2|42

3|.21

7| 77

|1

= 7x-42=(7*x)-(2*3*7)

= 7{x-(2*3)}

= 7=x-6