Question

8/27 + 4/15+ 19/27 + 11/15 

tính nhanh

Answer 1

\(\frac{8}{27}+\frac{4}{15}+\frac{19}{27}+\frac{11}{15}\)

\(=\left(\frac{8}{27}+\frac{19}{27}\right)+\left(\frac{4}{15}+\frac{11}{15}\right)\)

\(=\frac{27}{27}+\frac{15}{15}\)

\(=1+1=2\)

Answer 2

8/27+4/15+19/27+11/15

=(8/27+19/27)+(4/15+11/5)

=27/27+15/15

=1+1

=2

Answer 3

\(\frac{8}{27}+\frac{4}{15}+\frac{19}{27}+\frac{11}{15}\)

\(=(\frac{8}{27}+\frac{19}{27})+(\frac{4}{15}+\frac{11}{15})\)

\(=1+1=2\)