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先化简比,再求比值:6.4:8= 1 6

6.4:8=64:80=4:5,6.4:8=4;5=0.8; 1 6 : ...

6.4:8/7 =6.4*7:8 =44.8:8 =448:80 =112:20 =56:...

6.4:5.6 =64:56 =8:7 ~回答完毕~ ~\(^o^)/~祝学习进步~~~

6.4:8=(6.4÷1.6):(8÷1.6)=4:5 比值是6.4:8=6.4÷8=0.8 1...

6.4比5.6 =(6.4/0.8):(5.6/0.8) =8:7

化简比: 18:72 =1:4 5:5分之2 0=5:4 15:3.5=30:7 9分之2:...

6.4:8/7=32/5÷8/7=32/5×7/8=28/5

6.4:5.6=6.4÷5.6=8/7 ~回答完毕~ ~\(^o^)/~祝学习进步~~~

0.16:6.4=16:640=1:40=1/40

6.4:8 =32:40 =4:5 =4/5。

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