Lm giúp mik v
a) \(1,25.\frac{3}{7}+\frac{5}{4}.\left(\frac{-1}{7}\right)=\frac{5}{4}.\frac{3}{7}+\frac{5}{4}.\left(\frac{-1}{7}\right)=\frac{5}{4}.\left(\frac{3}{7}-\frac{1}{7}\right)=\frac{5}{4}.\frac{2}{7}=\frac{5}{14}\)
\(\sqrt{0,04}+\frac{3}{5}-\sqrt{0,25}+11,3=0,2+0,6-0,5+11,3=11,6\)
\(\frac{2^{12}.3^5-4^6.3^6}{2^{12}.9^3+8^4.3^5}=\frac{2^{12}.3^5-2^{12}.3^6}{2^{12}.3^6+2^{12}.3^5}=\frac{2^{12}.3^5\left(1-3\right)}{2^{12}.3^5.\left(3+1\right)}=\frac{-2}{4}=-\frac{1}{2}\)