Resposta:

Explicação passo a passo:

b11=4.1+3.1=4+3=7

b12=4.1+3.2=4+6=10

b13=4.1+3.3=4+9=13

b21=4.2+3.1=8+3=11

b22=4.2+3.2=8+6=14

b23=4.2+3.3=8+9=17

b31=4.3+3.1=12+3=15

b32=4.3+3.2=12+6=18

b33=4.3+3.3=12+9=21

|7 10 13|

|11 14 17|

|15 18 21|