rút gọn phân số sau
3939-101/3.2929+505
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\(\frac{3939-101}{3.2929+505}=\frac{3838}{9292}=\frac{19}{46}\)
a/\(\frac{3939-101}{3.2929+505}=\frac{39.101-101}{8787+505}=\frac{101.\left(39-1\right)}{87.101+5.101}=\frac{101.38}{101.\left(87+5\right)}=\frac{38}{92}\)
\(=\frac{38}{92}\)
b/\(\frac{6.4+6.7}{6.5+12}=\frac{4+1.7}{1.5+2}=\frac{4+7}{5+2}=\frac{11}{7}\)
\(\dfrac{18}{48}=\dfrac{3}{8}\)
\(\dfrac{72}{3939}=\dfrac{24}{1313}\)
\(\dfrac{1212}{3939}=\dfrac{4}{13}\)
a) \(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
b)\(\frac{10}{48}=\frac{10:2}{48:2}=\frac{5}{24}\)
c)\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
d)\(\frac{1212}{3939}=\frac{1212:303}{3939:303}=\frac{4}{13}\)
#H
Rút gọn phân số:
\(\frac{6}{9}=\frac{6\div3}{9\div3}=\frac{2}{3}\)
\(\frac{10}{48}=\frac{10\div2}{48\div2}=\frac{5}{24}\)
\(\frac{72}{84}=\frac{72\div12}{84\div12}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212\div303}{3939\div303}=\frac{4}{13}\)
1212/3939=4/13
3131/3535=31/35
tk mình nhé bạn
Thank you vẻy much
\(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{18:2}{48:2}=\frac{9}{24}\)
\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}\)
TL
\(\frac{6}{9}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{3}{8}\)
\(\frac{72}{84}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{4}{13}\)
nha bn\
HT
\(\frac{72}{84}\)=\(\frac{6}{7}\)
\(\frac{1212}{3939}\)=\(\frac{4}{13}\)
trả lời:
\(\frac{72}{84}=\frac{18}{21}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}=\frac{4}{13}\)
học tốt
3939-101/3.2929+505
=39.101-101/8787+505
=101.(39-1)/87.101+5.101
=101.38/101.(38+4)
=28/42
=2/3
mik làm nhầm rồi đáp án đúng nè
3939-101/3.2929+505
=39.101-101 /8787+505
=101.(39-1) /87.101+5.101
=101.38 /101.(87+5)
=38/92