TL

x - 0,2x = 216

0,8x = 216 

x = 270

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X - 20% x X = 216

X - 20/100 x X = 216

X x (1 - 20/100) = 216

X x 4/5 = 216

X = 216 : 4/5

X = 270

(Tíck cho mình với nhé!)

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6,3% 

HT

a)4560:100x32=1459,2

b)ngày thứ hai có số phần trăm là 

100-32=67%

b 68% mà bạn ????

Vào buổi chiều nhưng lại là 5h sáng?.-.?

ĐỐ MỌI NGƯỜI ĐẤY

1/4 : 0,25 - 1/8 : 0,125 + 1/2 : 0,5 - 1/10

= 0,25 : 0,25 - 0,125 : 0,125 + 0,5 : 0,5 - 1/10

= 1 - 1 + 1 - 1/10

= 1 - 1/10

= 9/10

_HT_

\(\frac{1}{4}\): 0,25 - \(\frac{1}{8}\): 0,125 + \(\frac{1}{2}\): 0,5 - \(\frac{1}{10}\)

= 0,25 : 0,25 - 0,125 : 0,125 + 0,5 : 0,5 - \(\frac{1}{10}\)

= 1 - 1 + 1 - \(\frac{1}{10}\)

= 1 - \(\frac{1}{10}\)

= \(\frac{9}{10}\)

~^Hok tốt^~

 25,8 + 15,62 x 84

=25,8+(15,62x84)

=25,8+1,312,08

=1,337.88

TL:

25,8 + 15,62 x 84

= 25,8 + 1312 x 84

= 1337,88

~HT~

!!!