Các câu hỏi tương tự
cho A=\(\frac{34}{7\cdot13}+\frac{51}{13\cdot22}+\frac{85}{22\cdot37}+\frac{68}{37\cdot49}\)
cho B=\(\frac{39}{7\cdot6}+\frac{65}{16\cdot31}+\frac{52}{31\cdot43}+\frac{26}{43\cdot49}\)
tính\(\frac{A}{B}\)
Cho
A= \(\frac{4}{31\times7}+\frac{6}{7\times41}+\frac{9}{10\times41}+\frac{7}{10\times57}\)
B= \(\frac{7}{19\times31}+\frac{5}{19\times43}+\frac{3}{13\times43}+\frac{11}{23\times57}\)
Tính \(\frac{A}{B}\)
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Tính D=\(\frac{\frac{15}{6\times16}+\frac{15}{16\times26}+\frac{15}{26\times36}}{\frac{33}{6\times16}-\frac{63}{16\times26}+\frac{93}{26\times36}}\)
tính
\(a,\left(\frac{51}{56}+\frac{8}{21}+\frac{16}{48}\right).\frac{32}{65}\)
\(b,\left(\frac{31}{20}-\frac{26}{45}\right).\frac{36}{49}\)
\(c,\frac{5}{39}.\left(7\frac{4}{5}.1\frac{2}{3}+8\frac{1}{3}.7\frac{4}{5}\right)\)
tính C= \(9.\left(\frac{13-\frac{13}{7}-\frac{13}{289}}{4-\frac{4}{7}-\frac{4}{289}}:\frac{39+\frac{39}{5}+\frac{39}{139}+\frac{39}{31}}{16+\frac{16}{5}+\frac{16}{139}+\frac{16}{31}}\right).\frac{158158}{164164}\)
tính hộ ợ
Tính tỷ số \(\frac{A}{B}\)
\(A=\frac{4}{9\times31}+\frac{5}{31\times12}+\frac{9}{36\times15}+\frac{13}{15\times58};B=\frac{5}{27\times8}+\frac{7}{8\times39}+\frac{9}{39\times12}+\frac{10}{12\times58}\)
tim tỉ số A/B biết
A=34/7*13+51/13*22+85/22*37+68/37*49
B=39/7*16+65/16*31+52/31*43+26/43*49
Tính tỉ số \(\frac{A}{B}\) biết\(A=\frac{34}{7.13}+\frac{51}{13.22}+\frac{85}{22.37}+\frac{68}{37.49};B=\frac{39}{7.16}+\frac{65}{16.31}+\frac{52}{31.43}+\frac{26}{43.49}\)
tinh a/b biet a=24/7*13+51/13*22+85/22*37+68/37*49
b=39/7*16+65/16*31+52/31*43+26/43*49