47×45/46+22×22/23 =(46+1)x45/46+22x(1-1/23) =46x45/46+45/46+22-22x1/23 =45+45/46-22-22/23 =23-1/46 =22又45/46 手机提问的朋友在客户端右上角评价点【满意】即可.