(13479+16397):(1276-968)=29876:308=97
(13479+16397):(1276-968)= 97
1) 13479+16397=29876
2) 1276-968=308
29876:308=97
(13479+16397):(1276-968)=29876:308=97
(13479+16397):(1276-968)= 97
1) 13479+16397=29876
2) 1276-968=308
29876:308=97