The sum of two numbers is 21. the larger number is 6 less than twice the smaller number.

The two numbers are,

9 and 12

Step-by-step explanation:

let x represent the smaller number.

larger number=2x-6

2x-6+x=21

3x-6=21

3x=21+6

3x=27

x=9

the smaller number is 9

the bigger number is 2(9)-6=18-6=12.

the one on the bottom left

step-by-step explanation:

all of the other ones have a specific pattern