Các câu hỏi tương tự
so sánh
A=\(\frac{19}{41}+\frac{23}{53}+\frac{29}{61}\)
B=\(\frac{21}{41}+\frac{23}{49}+\frac{33}{65}\)
So sánh các biểu thức A và B, biết:a/ A frac{19}{41}+frac{23}{53}+frac{29}{61} B frac{21}{41}+frac{23}{49}+frac{33}{65}b/ A frac{12}{14^{11}}+frac{23}{14^{12}} B frac{12}{14^{12}}+frac{23}{14^{11}}c/ A frac{19^{20}+5}{19^{20}-8} B frac{19^{21}+6}{19^{21}-7}
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So sánh các biểu thức A và B, biết:
a/ A = \(\frac{19}{41}+\frac{23}{53}+\frac{29}{61}\) B = \(\frac{21}{41}+\frac{23}{49}+\frac{33}{65}\)
b/ A = \(\frac{12}{14^{11}}+\frac{23}{14^{12}}\) B = \(\frac{12}{14^{12}}+\frac{23}{14^{11}}\)
c/ A = \(\frac{19^{20}+5}{19^{20}-8}\) B = \(\frac{19^{21}+6}{19^{21}-7}\)
So sánh các biểu thức A và B, biết:a/ A frac{19}{41}+frac{23}{53}+frac{29}{61} B frac{21}{41}+frac{23}{49}+frac{33}{65}b/ A frac{12}{14^{11}}+frac{23}{14^{12}} B frac{12}{14^{12}}+frac{23}{14^{11}}c/ A frac{19^{20}+5}{19^{20}-8} B frac{19^{21}+6}{19^{21}-7}
Đọc tiếp
So sánh các biểu thức A và B, biết:
a/ A = \(\frac{19}{41}+\frac{23}{53}+\frac{29}{61}\) B = \(\frac{21}{41}+\frac{23}{49}+\frac{33}{65}\)
b/ A = \(\frac{12}{14^{11}}+\frac{23}{14^{12}}\) B = \(\frac{12}{14^{12}}+\frac{23}{14^{11}}\)
c/ A = \(\frac{19^{20}+5}{19^{20}-8}\) B = \(\frac{19^{21}+6}{19^{21}-7}\)
so sanh
a, A= 19/41 + 23/53 + 29/61
B= 21/41 + 23/49 + 33/65
b,A= 12/ 14^11 + 23/14^12
B=12/14^12 + 23/ 14^11
Rút gọn:
A=\(\frac{2-\frac{2}{19}+\frac{2}{23}-\frac{1}{1010}}{3-\frac{3}{19}+\frac{3}{23}-\frac{3}{2020}}\)\(.\frac{4-\frac{4}{29}+\frac{4}{41}-\frac{1}{505}}{5-\frac{5}{29}+\frac{5}{41}-\frac{1}{404}}\)
\(\frac{13}{25}+\frac{6}{41}-\frac{38}{25}+\frac{35}{41}-\frac{1}{2}\)
\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)
So sánh : A = \(\frac{31}{23}+\left(\frac{7}{23}+\frac{8}{2}\right)\)và B = \(\left(\frac{1}{3}+\frac{12}{67}+\frac{13}{41}\right)-\left(\frac{79}{67}+\frac{28}{41}\right)\)
1. so sánh A và B . biết : A =\(\frac{23^{40}+1}{23^{41}+1}\);B =\(\frac{23^{41}+1}{23^{42}+1}\)
1) Tính hợp lýa)frac{31}{23}-left(frac{7}{32}+frac{8}{32}right)b)left(frac{1}{3}+frac{12}{67}+frac{13}{41}right)-left(frac{79}{67}-frac{28}{41}right)c)frac{38}{45}-left(frac{8}{45}-frac{17}{51}-frac{3}{11}right)d)left(frac{17}{28}+frac{18}{29}-frac{19}{30}-frac{30}{31}right).left(-frac{5}{12}+frac{1}{4}+frac{1}{6}right)
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1) Tính hợp lý
a)\(\frac{31}{23}-\left(\frac{7}{32}+\frac{8}{32}\right)\)
b)\(\left(\frac{1}{3}+\frac{12}{67}+\frac{13}{41}\right)-\left(\frac{79}{67}-\frac{28}{41}\right)\)
c)\(\frac{38}{45}-\left(\frac{8}{45}-\frac{17}{51}-\frac{3}{11}\right)\)
d)\(\left(\frac{17}{28}+\frac{18}{29}-\frac{19}{30}-\frac{30}{31}\right).\left(-\frac{5}{12}+\frac{1}{4}+\frac{1}{6}\right)\)