Question

Tinh bang cach thuan tien nhat 4/15+8/13+11/5+5/13

Answer 1

\(\frac{4}{15}+\frac{8}{13}+\frac{11}{15}+\frac{5}{13}\)

\(=\left(\frac{4}{15}+\frac{11}{15}\right)+\left(\frac{8}{13}+\frac{5}{13}\right)\)

\(=\frac{15}{15}+\frac{13}{13}\)

\(=1+1\)

\(=2\)

Chúc bạn học tốt nha !!! 

Answer 2

\(\frac{4}{15}+\frac{8}{13}+\frac{11}{15}+\frac{5}{13}\)

\(=\left(\frac{4}{15}+\frac{11}{15}\right)+\left(\frac{8}{13}+\frac{5}{13}\right)\)

\(=1+1\)

\(=2\)

Answer 3

=(4/15+11/5)+(8/13+5/13)

=37/15+1=52/15

k mink nha

Answer 4

Sorry bn.Mk nhầm nha

Theo mk : nguyen thi thu đúng rồi

=/

Answer 5

\(\frac{4}{15}\)+ \(\frac{8}{13}\)+ \(\frac{11}{5}\)+ \(\frac{5}{13}\)

= ( \(\frac{4}{15}\)+ \(\frac{33}{15}\)) + ( \(\frac{8}{13}\)+ \(\frac{5}{13}\))

= \(\frac{37}{15}\)+ \(\frac{13}{13}\)

= \(\frac{37}{15}\)+ 1

=\(\frac{37}{15}\)+ \(\frac{15}{15}\)

= \(\frac{52}{15}\)

Answer 6

thans cac b

Answer 7

\((\)\(\frac{8}{13}\)+\(\frac{5}{13}\)\()\)+\((\)\(\frac{4}{15}\)+\(\frac{33}{15}\)\()\)

= 1 + \(\frac{37}{15}\)

= 1+1+1+\(\frac{7}{15}\)

= 3+\(\frac{7}{15}\)

= 3\(\frac{7}{15}\)