两筐同样重的水果，第一筐卖出31千克，第二筐卖出19千克，现在两筐水果相差多少千克？2R0]-[+S5b;a
算式：提示4h3r/O1I+_.C:C2R0]-[+S5b;a
答：现在两筐水果相差4]'V'H4q/I5U5^.B千克。2R0]-[+S5b;a