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8.7:3的化简比

8.7:3 =87:30 两边除以3 =29:10

(3/4)÷(-7/8)-(7/8)÷(-7/8) =(-12/7)-(-1) =5/7

解:7.8:3.9=2:1 满意请采纳!

7.8比3.9化简比是(2:1) 7.8:3.9 =78:39 =(78÷39):(39÷39) =2:1

7.8:3.6的化简比是13:6, 7.8:3.6 =78:36 =39:18 =13:6

26:13

是21分之8

=7/8x1/35=1/40

8/7比16/15 =8/7÷16/15 =8/7x15/16 =15/14 =15:14

八分之七:37.5% =7/8:3/8 =7/3

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