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24/5:1/5等于x:1/7.

1-5/24-7/24 =1-(5/24+7/24) =1-12/24 =12/24 =1/2

7.5x-4.5x=24 3x=24 x=24÷3 x=8

见图

如图,望采纳

X-(7/16-5/24)等于7/24 解:X-11/48=7/24 X=7/24+11/48 X=25/48

你好 (7-1)x(9-5) =6x4 =24

247x5=1235 前一个方框内填7,后一个填2 谢谢,请采纳

=1.7×3×24+1.7×28 =1.7×(72+28) =1.7×100 =170

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