\(\frac{-5}{11}:\frac{12}{25}-\frac{6}{11}:\frac{12}{25}\)
Mong mọi người giúp mik!
\(\frac{12}{25}.\frac{23}{7}-\frac{12}{25}.\frac{12}{7}\)
\(\frac{-6}{11}.\frac{7}{10}.\frac{11}{-6}.(-20)\)
\(\frac{25}{12}.\frac{23}{7}-\frac{25}{12}.\frac{12}{7}\)
\(=\frac{25}{12}.\left(\frac{23}{7}-\frac{12}{7}\right)\)\(\)
\(=\frac{25}{12}.\frac{11}{7}\)
\(=\frac{275}{84}\)
\(-\frac{6}{7}.\frac{7}{10}.\frac{11}{-6}.\left(-20\right)\)
\(=-\frac{3}{5}.\frac{-11}{6}.\left(-20\right)\)
\(=\frac{11}{10}.\left(-20\right)\)
\(=-22\)
Tính
\(\frac{12}{25}.\frac{23}{7}-\frac{12}{25}.\frac{12}{7}=\frac{12}{25}\left(\frac{23}{7}-\frac{12}{7}\right)\)
\(=\frac{12}{25}.\frac{11}{7}=\frac{132}{175}\)
\(-\frac{6}{11}.\frac{7}{10}.\frac{11}{-6}.\left(-20\right)\)
\(=\frac{-6.7.11.\left(-20\right)}{11.10.\left(-6\right)}=7.\left(-20\right)=-140\)
Sửa lại câu thứ 2 :vv
\(-\frac{6}{11}.\frac{7}{10}.\frac{11}{6}.\left(-20\right)=\frac{-6.7.11.\left(-20\right)}{11.10.6}=7.\left(-2\right)=-14\)
Giúp mik đi . Ai giúp rùi mà mún ảnh anime hay quotes gì đó thì mik sẽ hậu tạ nha .
Đề : thực hiện phép tính : \(\frac{5}{15}+\frac{14}{25}-\frac{12}{9}+\frac{2}{7}+\frac{11}{25}\)
5/15+14/25-12/9+2/7+11/25=(5/15+2/7)+(14/25+11/25)-12/9=17/35+1-12/9=16/105
=\(\left(\frac{5}{15}-\frac{12}{9}\right)+\left(\frac{14}{25}+\frac{11}{15}\right)+\frac{2}{7}\)
=\(\left(\frac{1}{3}-\frac{4}{3}\right)+1+\frac{2}{7}\)
=\(\frac{-3}{3}+1+\frac{2}{7}=-1+1+\frac{2}{7}\)
=\(\frac{2}{7}\)
tính hợp lí nếu có thể
\(a.\frac{-5}{9}+\frac{5}{9}:\left(1\frac{2}{3}-1\frac{1}{12}\right)\)
\(b.\frac{7}{25}.\frac{11}{13}-\frac{7}{25}.\frac{2}{13}-\frac{18}{25}\)
\(c.\frac{18}{11.13}+\frac{18}{13.15}+........+\frac{18}{99.101}\)
LÀM ƠN GIÚP MÌNH , MIK CẦN GẤP . 3h MIK ĐI HỌC RỒI !
\(a.\frac{-5}{9}+\frac{5}{9}:A=\left(-\frac{5}{9}+\frac{5}{9}\right):A=0:A=0\)
\(b.\frac{7}{25}.\frac{11}{13}-\frac{7}{25}.\frac{2}{13}-\frac{8}{25}=\frac{7}{25}.\left(\frac{11}{13}-\frac{2}{13}\right)-\frac{8}{25}=\frac{7}{25}.\frac{9}{13}-\frac{8}{25}=\frac{63}{325}-\frac{8}{25}=\frac{-41}{325}\)
C.Thua
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a )-\(-\frac{17}{30}-\frac{11}{-15}+-\frac{7}{12}\)
b ) \(-\frac{5}{9}+\frac{5}{9}:\left(1\frac{2}{3}-2\frac{1}{12}\right)\)
c ) \(-\frac{7}{25}.\frac{11}{13}+-\frac{7}{25}.\frac{2}{13}-\frac{18}{25}\)
\(x-\frac{1}{9}-\frac{3}{5}=\frac{3}{6}\)
\(\frac{-12}{25}.\frac{3}{4}-x+\frac{6}{-11}-\frac{5}{6}=0\)
\(x-\frac{1}{9}-\frac{3}{5}=\frac{3}{6}\)
\(x=\frac{3}{6}+\left(\frac{1}{9}-\frac{3}{5}\right)\)
\(x=\frac{3}{6}+\left(-\frac{22}{45}\right)\)
\(x=\frac{1}{90}\)
\(\frac{-12}{25}.\frac{3}{4}-x+\frac{6}{-11}-\frac{5}{6}=0\)
\(\frac{-9}{25}-x+\left(\frac{-91}{66}\right)=0\)
\(\frac{-9}{25}-x=0+\left(\frac{-91}{66}\right)\)
\(\frac{-9}{25}-x=\frac{-91}{66}\)
\(x=\left(\frac{-9}{25}\right)-\left(\frac{-91}{66}\right)\)
\(x=\frac{1681}{1650}\)
Tính hợp lí:
a.\((-17+|91|)-(91-|-17|-2011)\)\(1\)\()\)
b.\(\frac{4}{7}\)+\(\frac{5}{6}\):5-0,375.(-2)\(^2\)
c.\((\frac{-7}{11}\):\(\frac{5}{12}\)+\(\frac{-4}{12}:\frac{5}{12}).\frac{2.|-5|}{3}\)
d.\(1\frac{13}{15}.25\%.3+(\frac{8}{15}-\frac{79}{60}):1\frac{23}{24}\)
làm giúp mk với !
thanks mọi người
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
a)\(\frac{-5}{7}.\left(\frac{2}{11}+\frac{9}{5}\right)+\left(\frac{-9}{11}+\frac{4}{5}\right).\frac{5}{7}\) b)\(2\frac{2}{5}.\frac{5}{9}+1\frac{4}{9}.\frac{12}{5}-1,8.\frac{10}{3}\)c)\(\frac{-7}{25}.\frac{11}{13}+\frac{-7}{25}.\frac{4}{13}-\frac{2}{13}.\frac{-7}{25}\)
tính
a, \(\frac{-5}{6}:\frac{-6}{7}:\frac{-7}{8}:\frac{-8}{9}:\frac{-9}{10}\)
b,\(\frac{-4}{25}:\frac{11}{79}+\frac{15}{11}:\frac{25}{79}\)
nhanh mik tick nhé