\(\frac{4.5+4.11}{8.7-4.3}=\frac{16}{11}\)
\(\frac{4.5+4.11}{8.7+4.3}=\frac{4\left(5+11\right)}{4.2.7+4.3}=\frac{4.\left(5+11\right)}{4.14+4.3}=\frac{4.16}{4\left(14+3\right)}=\frac{16}{14+3}=\frac{16}{17}\)
=4.(5+11)
4.2.7-4.3
=4.16
4.14-4.3
=4.16
4.(14-3)
=4.16
4.11
=16
11
xong