①25.3-7.3-13.7+7.3
②16/24-3/24-8/24-9/24
三.(24/24-36/24-9/24+14/24)*(-24)
④ -(5.5+3.2+2.5+4.8)
⑤33.1-10.7+22.9-2.3
⑥(24*5/6)-(25*21/5)
⑦ -(231/8)*(1/7)
①25.3-7.3-13.7+7.3
②16/24-3/24-8/24-9/24
三.(24/24-36/24-9/24+14/24)*(-24)
④ -(5.5+3.2+2.5+4.8)
⑤33.1-10.7+22.9-2.3
⑥(24*5/6)-(25*21/5)
⑦ -(231/8)*(1/7)