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\(\frac{31}{32}\)= \(\frac{1+2+4+8+16}{32}\)= \(\frac{1}{32}\)+ \(\frac{2}{32}\)+ \(\frac{4}{32}\)+ \(\frac{8}{32}\)+ \(\frac{16}{32}\)= \(\frac{1}{32}\)+ \(\frac{1}{16}\)+ \(\frac{1}{8}\)+ \(\frac{1}{4}\)+ \(\frac{1}{2}\)
Vậy \(\frac{31}{32}\)= \(\frac{1}{32}\)+ \(\frac{1}{16}\)+ \(\frac{1}{8}\)+ \(\frac{1}{4}\)+ \(\frac{1}{2}\)
\(\frac{31}{32}=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\)
\(\frac{31}{32}=\frac{1}{32}+\frac{30}{32}=\frac{1}{32}+\frac{15}{16}=\frac{1}{32}+\frac{1}{16}+\frac{14}{16}\)
\(\Rightarrow\frac{31}{32}=\frac{1}{32}+\frac{1}{16}+\frac{7}{8}=\frac{1}{32}+\frac{1}{16}+\frac{1}{8}+\frac{6}{8}\)
\(\Rightarrow\frac{31}{32}=\frac{1}{32}+\frac{1}{16}+\frac{1}{8}+\frac{3}{4}=\frac{1}{32}+\frac{1}{16}+\frac{1}{8}+\frac{1}{4}+\frac{2}{4}\)
\(=\frac{1}{32}+\frac{1}{16}+\frac{1}{8}+\frac{1}{4}+\frac{1}{2}\)
Vậy :\(\frac{31}{32}=\frac{1}{32}+\frac{1}{16}+\frac{1}{8}+\frac{1}{4}+\frac{1}{2}\)
\(\frac{31}{32}=\frac{16+8+4+2+1}{32}=\frac{16}{32}+\frac{8}{32}+\frac{4}{32}+\frac{2}{32}+\frac{1}{32}=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\)
\(\frac{15}{16}=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}\)
\(\frac{42}{84}=0,5\)
\(\frac{31}{155}=0,2\)
\(\frac{427}{3416}=0,125\)
42 / 84 = 5/10 = 0,5
31 / 155 = 5/10 = 0,5
427 / 3416 = 125 / 1000 = 0,125
a)\(\frac{5}{6}=\frac{1}{2}+\frac{1}{3}\)
b)\(\frac{7}{12}=\frac{1}{2}+\frac{1}{12}=\frac{1}{3}+\frac{1}{4}\)
c)\(\frac{7}{8}=\frac{1}{8}+\frac{6}{8}\)
\(\frac{5}{6}=\frac{1}{2}+\frac{1}{3}\)
\(\frac{7}{12}=\frac{1}{3}+\frac{1}{4}\)
Bạn quy đồng ra là xong thôi mà.
Mình ko rảnh nên ko làm nhé.
\(\frac{11}{2}=5,5\)
\(\frac{15}{4}=3,75\)
\(\frac{31}{5}=6,2\)
Mình đảm bảo đúng! Ai tốt bụng thì k nha!
31/32 = 1/8 + 1/4 + 1/2 + 1/16 + 1/32