-7
2
16/5
2
20
0
-6.58
-76/15算式啊(15+6)-(20+8)=21-28=-7(8+3+9)-(7+6+5)=20-18=23 又3/5+4又8/5+(-5又2/3)+(-1/3)=9又1/5-6=3又1/5=16/5(-9.5-0.5)+(2.25+9.75)=-10+12=2(-19+19)+(28-8)=20(9-9)+10+(-7-3)=0+10-10=0(0.36+0.64)-7.4-03*0.6=1-7.4-0.18=-6.58(3又1/4+5又3/4)-17/3-42/5=135/15-85/15-126/15=-76/5满意请点采纳~