\(\frac{7}{9}\)= \(\frac{35}{ }\)= \(\frac{ }{180}\)= \(\frac{77}{ }\)
\(\frac{288}{72}\)= \(\frac{ }{24}\)= \(\frac{16}{ }\)= \(\frac{ }{18}\)
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Đặt \(A=\frac{9+\frac{9}{11}+\frac{18}{23}-\frac{27}{37}}{8+\frac{8}{11}+\frac{16}{23}-\frac{24}{37}}-\frac{2+\frac{16}{29}-\frac{24}{13}-\frac{32}{11}}{3+\frac{24}{29}-\frac{36}{13}-\frac{48}{11}}\)\(=\frac{9\left(1+\frac{1}{11}+\frac{2}{23}-\frac{3}{37}\right)}{8\left(1+\frac{1}{11}+\frac{2}{23}-\frac{3}{37}\right)}-\frac{2\left(1+\frac{8}{29}-\frac{12}{13}-\frac{16}{11}\right)}{3\left(1+\frac{8}{29}-\frac{12}{13}-\frac{16}{11}\right)}\)
\(=\frac{9}{8}-\frac{2}{3}\)(do \(1+\frac{1}{11}+\frac{2}{23}-\frac{3}{37};1+\frac{8}{29}-\frac{12}{13}-\frac{16}{11}\ne0\))
\(=\frac{27}{24}-\frac{16}{24}=\frac{11}{24}.\)
Vậy A = \(\frac{11}{24}.\)
7/9 = 35/45 = 140/180 = 77/99
288/72 = 96/24 = 16/4 = 112/18
k đúng cho mình nha bn
\(\frac{7}{9}\)=\(\frac{35}{45}\)=\(\frac{140}{180}\)=\(\frac{77}{99}\)
\(\frac{288}{72}\)=\(\frac{96}{24}\)=\(\frac{16}{4}\)=\(\frac{112}{18}\)