Add matrix I and matrix J
I = [6] J= [15]
[5] [13]
I+J= [□]
[□]
I + J = [6+15]
[5+13]
I + J = [21]
[18]
I = [6] J= [15]
[5] [13]
I+J= [□]
[□]
[5+13]
I + J = [21]
[18]