Find the U and V values please

Consider the following transportation problem supplier 1 supplier 2 supplier 3 Demand Destination 1 Destination 2 Destination 3 Capacity $10 $5 $12 35 $13 $2 $1 40 $4 $8 $3 30 34 21 10 Use the northwest method to find a feasible solution Fill the blanks in the table: if no material is transported write: 0 (zero) Destination 1 Destination 2 Destination 3 Capacity 35 supplier 1 supplier 2 40 supplier 3 10 Demand 30 34 21