14.37×7.88-9.37×7.38＋1.437×21.2-93.7×0.262=14.37×7.88-9.37×7.38＋14.37×2.12-9.37×2.62=14.37×(7.88+2.12)-9.37×(7.38+2.62)=14.37×10-9.37×10=(14.37-93.7)×10=5×10=50