九分之八减五分之四,减九分之一的和等于。 三又四分之三,减去0.75加上,二又二分之一的和等于多

2025-04-06 09:53:38
推荐回答(1个)
回答1:

(8/9)-(4/5)-(1/9)=(40/45)-(36/45)-(5/45)=-(1/45)
4+(3/4)-0.75+2+(1/2)=4.75-0.75+2.5=6.5