2.75减去括号1.75加九分之二括号再减去九分七咋算(
2.75减括号一又四分之3+9分之二括号-9分之七 -
答：2.75减括号一又四分之3+9分之二括号-9分之七=2.75-7/4-2/9-7/9 =2.75-1.75-1 =0
2.75-(1又3/4+2/9)-7/9 =（2.75-1又3/4）（2/9+7/9）1-1 =0
答：2.75减括号一又四分之3+9分之二括号-9分之七=2.75-7/4-2/9-7/9 =2.75-1.75-1 =0
2.75-(1又3/4+2/9)-7/9 =（2.75-1又3/4）（2/9+7/9）1-1 =0
解：8-2.75)÷2.5+1.9 =5.25÷2.5+1.9 =2.1+1.9 =4
2.75+（2又3/4+(1又1/8)+（14又5/7）（5.125）（2.75+2又3/4）(1又1/8-5.125）+（14又5/7）4.5-4-14又5/7 =1/2-14又5/7 =-14又3/7
50-括号3.5-2.75 0.86括号的简算怎么算 -
50-括号3.5-2.75+0.86括号=50-(3.5-2.75+0.86)=50-3.5+2.75-0.86 =50+2.75-3.5-0.86 =50+2.75-(3.5+0.86)=52.75-4.36 =48.39
（2.75+27.5×0.9）÷0.5 =（2.75+2.75×9）×2 =2.75×（1+9）×2 =2.75×10×2 =27.5×2 =55
三分之二十三减括号-2.75等于多少? -
23/3-（2.75）7又2/3+2.75 =7又2/3+2又3/4 =7又8/12+2又9/12 =10又5/12
-0.75+（3）2.75+(-7)=(-0.75+2.75)+(-3-7)=2-10 =-8
括号正四分之11 加括号负2.75等于 -
括号正四分之11 加括号负2.75 =11/4-11/4 =0 满意采纳，
(-0.5)+3又4分之1+2.75+(-5又2分之1)=-0.5+3.25+2.75-5.5 =-0.5-5.5+3.25+2.75 =-6+6 =0