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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

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

14:9

8/7:0.35 =8/7÷7/20 =(8×20):(7×7) =160:49

请采纳

=7/8x1/35=1/40

0.125:7/8 =1/8:7/8 =1:7

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

解答: 解:①5:7=5:7;②4:1.2,=(4×5):(1.2×5),=20:6,=10:3;③34:16,=(34×12):(12×16),=9:2;④5:58,=(5×8):(58×5),=40:5,=8:1; ⑤47:8,=(47×7):(8×7),=4:56,=1:14;⑥125:127,=(125×35):(127×3...

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