\(A=\frac{18^4.2^{12}.4^3.9^3}{16^3.6^9.27^3}\)
\(A=\frac{\left(3.3.2\right)^4.2^{12}.\left(2^2\right)^3.\left(3^2\right)^3}{\left(4^2\right)^3.\left(3.2\right)^9.\left(3^3\right)^3}\)
\(A=\frac{3^{14}.2^{22}}{2^{21}.3^{18}}\)
\(A=\frac{2}{3^4}\)
\(A=\frac{2}{81}\)
CHÚC BN HỌC TỐT!!!!