\(\frac{a}{27}=\frac{-5}{9}\)
suy ra \(a\cdot9=27\cdot\left(-5\right)\)
\(a\cdot9=-135\)
\(a=-15\)
\(\frac{-5}{9}=\frac{-45}{b}\)
suy ra \(-5\cdot b=9\cdot\left(-45\right)\)
\(-5\cdot b=-405\)
\(b=81\)
\(\frac{a}{27}=\frac{-5}{9}\)
suy ra \(a\cdot9=27\cdot\left(-5\right)\)
\(a\cdot9=-135\)
\(a=-15\)
\(\frac{-5}{9}=\frac{-45}{b}\)
suy ra \(-5\cdot b=9\cdot\left(-45\right)\)
\(-5\cdot b=-405\)
\(b=81\)
Tìm a, b biết: \(\frac{a}{27}=\frac{-5}{9}=\frac{-45}{b}\)
Tìm a , b biết
\(\frac{a}{27}=\frac{-5}{9}=\frac{-45}{b}\)
Tìm a, b biết:
\(\frac{a}{27}=\frac{-5}{9}=\frac{-45}{b}\)
Tìm a,b biết :
\(\frac{a}{27}=\frac{-5}{9}=\frac{-45}{b}\)
Làm giúp mình nhé !!!
Ai nhanh sẽ được tik ! :D
1,Tính : ( Hãy tính nhanh nếu có thể )
a,\(\frac{3^6.45^4-15^{13}.\left(\frac{1}{5}\right)^9}{27^4.25^3+45^6}\)
b,\(\frac{\left(\frac{2}{5}\right)^7.5^7+\left(\frac{9}{4}\right)^3:\left(\frac{3}{16}\right)^3}{2^7.5^2+512}\)
Tính:
a) \(A=\frac{\frac{7}{8}+\frac{7}{27}-\frac{7}{49}}{\frac{11}{8}+\frac{11}{27}-\frac{11}{49}}\)
b)\(B=\frac{\frac{8}{9}-\frac{8}{27}-\frac{8}{81}+\frac{8}{243}}{4-\frac{4}{3}-\frac{4}{9}+\frac{4}{27}}\)
c)\(C=\frac{\frac{2}{7}+\frac{2}{5}+\frac{2}{17}-\frac{2}{293}}{\frac{3}{7}+\frac{3}{5}+\frac{3}{17}-\frac{3}{293}}\)
Tính:
a) \(\frac{\frac{3}{5}+\frac{3}{27}-\frac{3}{9}-\frac{3}{11}}{\frac{4}{5}+\frac{4}{27}-\frac{4}{9}-\frac{4}{11}}\)
b) \(\frac{5-\frac{5}{3}-\frac{5}{27}}{8-\frac{8}{3}-\frac{8}{27}}:\frac{15+\frac{15}{121}-\frac{15}{11}}{16+\frac{16}{121}-\frac{16}{11}}\)
c) \(\frac{1}{2}:\left(\frac{-3}{2}\right):\frac{4}{3}:\left(\frac{-5}{4}\right):\frac{6}{5}:\left(\frac{-7}{6}\right):...:\left(\frac{-101}{100}\right)\)
Mọi người nhớ đánh nhanh câu trả lời giúp mình nhé!!
\(a=\frac{\frac{5}{3}+\frac{5}{9}-\frac{5}{27}}{8-\frac{8}{3}+\frac{8}{9}-\frac{8}{27}}:\frac{15-\frac{15}{11}+\frac{15}{121}}{16-\frac{16}{11}+\frac{16}{121}}\)
ngày 27/2 mình sẽ giai ai giải đung sẽ dc 20 dung
Tính tỷ số \(\frac{A}{B}\)
\(A=\frac{4}{9\times31}+\frac{5}{31\times12}+\frac{9}{36\times15}+\frac{13}{15\times58};B=\frac{5}{27\times8}+\frac{7}{8\times39}+\frac{9}{39\times12}+\frac{10}{12\times58}\)