Question

Solve the following with explanation​

Answer 1

Answer:

I think the answer is seven

Step-by-step explanation:

follow me if I am right

Answer 2

Answer:

answer is 8

Step-by-step explanation:

5+3+4+1=13

4+1+2+7=14

let the unknown digit be x

7+2+3+x=20

12+x=20

x=20-12

x=8

verification:

3+x+4+3=18

put x=8

3+8+4+3=18

18=18

hence verified