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\(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{6}+\frac{1}{32}\)
\(\frac{4+2+1}{8}+\frac{1}{6}+\frac{1}{32}\)
\(\frac{9}{8}+\frac{1}{6}+\frac{1}{32}\)
\(\frac{9}{8}+\frac{1}{32}+\frac{1}{6}\)
\(\frac{36+32}{32}+\frac{1}{6}\)
\(\frac{68}{32}+\frac{1}{6}=\frac{17}{8}+\frac{1}{6}\)
\(\frac{51+4}{24}=\frac{55}{24}\)
\(x-2\frac{1}{4}=3\frac{1}{2}\)
\(x-\frac{9}{4}=\frac{7}{2}\)
\(x=\frac{7}{2}+\frac{9}{4}\)
\(x=\frac{14}{4}+\frac{9}{4}\)
\(x=\frac{23}{4}\)
\(\left(1+\frac{1}{2}\right)\left(1+\frac{1}{3}\right)\left(1+\frac{1}{4}\right)...\left(1+\frac{1}{99}\right)\)
\(=\frac{3}{2}\cdot\frac{4}{3}\cdot\frac{5}{4}\cdot...\cdot\frac{100}{99}\)
\(=\frac{100}{2}=50\)
\(\frac{1}{3}\) + \(\frac{5}{6}\): \(\left(x-2\frac{1}{5}\right)\)= \(\frac{3}{4}\)
<=> \(\frac{5}{6}\):\(\left(x-2\frac{1}{5}\right)\)= \(\frac{3}{4}\)- \(\frac{1}{3}\)
<=> \(\frac{5}{6}\) : \(\left(x-2\frac{1}{5}\right)\) = \(\frac{5}{12}\)
<=> \(\left(x-2\frac{1}{5}\right)\) = \(\frac{5}{6}\) : \(\frac{5}{12}\)
,<=> \(\left(x-2\frac{1}{5}\right)\)= 2
<=. x = 2 + \(\frac{11}{5}\)
<=> x = \(\frac{21}{5}\)
=2/33 x ( 6/12 + 9/12 - 4/12 )
=2/33 x ( (6+9-4 )/12)
=2/33 x 11/12
=(2 x 11) / (33 x12)
=1/18
BAN NHO GIU LOI HUA K NHA
trả lời
1+1=2
2x3=6
8:2=4
6x4x9=216
chúc bạn học tốt
1 + 1 =2
2 x 3 =6
8 : 2 = 4
6 x 4 x 9 = 216
hok tốt