[tex]a = \frac{0.2^3*10^4}{324} : \frac{8^3*15}{12^5}\\\\
a = \frac{0.008*10000}{324} : \frac{2^9*15}{2^{10}*3^5}\\\\
a = \frac{80}{324} : \frac{15}{2*3^5}\\\\
a = \frac{20}{81} : \frac{5}{2*3^4}\\\\
a = \frac{20}{81} * \frac{2*3^4}{5}\\\\
a = \frac{40*3^4}{405}\\\\
a = \frac{3240}{405}\\\\
a = \frac{648}{81}\\\\
a = 8[/tex]
Acum b :)
[tex]b = 23.7 - 3^2 + 5.9:0.59-2.1:3\\
b = 23.7 - 9 + 10-0.7\\
b = 23 +1\\
b = 24[/tex]
deci cmmdc-ul lor e 8
