W3-55= W2-67= W1-42= W7-28= W4-39= W5-87=

Question

W3-55= W2-67= W1-42= W7-28= W4-39= W5-87=

Answer 1

63-55=8
51-42=8
44-39=5
72-67=5
37-28=9
95-87=8