25.3+(-7.3)+(-13.7)+7.3
1个回答

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)