24÷3/10×60% =24x 10/3 x3/5 =24 x2 =48 0.25×29/49＋20/49×25% =0.25 x (29/49 +20/49) =0.25 x1 =0.25
24÷3/10×60% 0.25×29/49＋20/49×25% 你喜欢怎么算就怎么算【要过程】
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