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\(\frac{4}{1}.\frac{6}{2}.\frac{8}{3}.\frac{10}{4}...\frac{64}{31}=\frac{2^{31}.\left(2.3.4.5...32\right)}{1.2.3.4...31}=2^{31}.32\)
Mà \(2^x=2^{31}.32=2^{31}.2^5=2^{36}\)
\(\Rightarrow x=36\)
Đặt \(A=\left(\frac{5}{12}+1\frac{4}{3}-0,25\right):\frac{5}{8}+0,75\)
\(A=\left(\frac{5}{12}+\frac{7}{3}-\frac{1}{4}\right):\frac{5}{8}+0,75\)
\(A=\left(\frac{5}{12}+\frac{28}{12}-\frac{3}{12}\right):\frac{5}{8}+\frac{15}{32}:\frac{5}{8}\)
\(A=\frac{5}{2}:\frac{5}{8}+\frac{15}{32}:\frac{5}{8}\)
\(A=\left(\frac{5}{2}+\frac{15}{32}\right):\frac{5}{8}\)
\(A=\frac{19}{4}\)
CÓ PHẢI = 63/20 ĐÚNG KO
NẾU ĐÚNG THÌ K HOẶC KB NHÉ! ! !
sssongokusss nếu bạn ko biết trả lời thì thôi để cho ngta yên đi
\(=\frac{3}{200}:\frac{3}{5}+\frac{3}{2}\left(\frac{4}{25}-\frac{2}{5}\right)-\frac{1}{25}.\left(\frac{7}{4}:\frac{7}{5}-\frac{5}{2}\right)\)
\(=\frac{3.5}{200.3}+\frac{3}{2}\left(\frac{4}{25}-\frac{2.5}{25}\right)-\frac{1}{25}\left(\frac{7.5}{4.7}-\frac{5}{2}\right)\)
\(=\frac{1}{40}+\frac{3}{2}\left(\frac{-6}{25}\right)-\frac{1}{25}\left(\frac{5}{4}-\frac{10}{4}\right)\)
\(=\frac{1}{40}-\frac{9}{25}+\frac{1}{20}\)
\(=\frac{1.5}{40.5}-\frac{9.8}{25.8}+\frac{1.10}{20.10}\)
\(=\frac{5-72+10}{200}=\frac{-57}{200}\)
a/=(74-(-1937)1)
=74-(-1937)
=2011
b/=4/7+5/6:5-3/8*(-4)
=4/7+1/6-(-3/2)
=31/42-(-3/2)
=47/21
minh chi biet bay nhieu
= 19/4 - 0,37 + 1/8 - 1,28 - 2,5 + 37/12
= 19/4 - 37/100 + 1/8 - 32/25 - 5/2 + 37/12
= 219/50 + (-231/200) - 67/12
= 129/40 - 67/12
=(-283/120)
bạn k cho mình đi làm ơn đó
\(4\frac{3}{4}-0,37+\frac{1}{8}-1,28-2,5+3\frac{1}{12}\)
\(=\frac{19}{4}-\frac{37}{100}+\frac{1}{8}-\frac{32}{25}-\frac{5}{2}+\frac{37}{12}\)
\(=\frac{4750}{1000}-\frac{370}{1000}+\frac{125}{1000}-\frac{1280}{1000}-\frac{2500}{1000}+\frac{37}{12}\)
\(=\frac{4750-370+125-1280-2500}{1000}+\frac{37}{12}\)
\(=\frac{29}{40}+\frac{37}{12}=\frac{87}{120}+\frac{370}{120}=\frac{457}{120}=3\frac{97}{120}\)
--Good luck--
\(4\frac{3}{4}+\left(-0,375\right)+\frac{1}{8}+\left(-1,20\right)+\left(-2,5\right)+\frac{31}{12}\)
\(=\frac{19}{4}+\frac{-3}{8}+\frac{1}{8}+\frac{-6}{5}+\frac{-5}{2}+\frac{31}{12}\)
\(=\frac{570}{120}+\frac{-45}{120}+\frac{15}{120}+\frac{-144}{120}+\frac{-300}{120}+\frac{310}{120}\)
\(=\frac{406}{120}=\frac{203}{60}\)
e nhầm phải là 3\(\frac{1}{12}\)nha