\(\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{8}{10}+\frac{15}{20}+\frac{20}{30}\)
= \(\left(\frac{1}{3}+\frac{20}{30}\right)+\left(\frac{1}{4}+\frac{15}{20}\right)\)\(+\left(\frac{1}{5}+\frac{8}{10}\right)\)
= \(1+1+1\)
= \(3\)
Hok tốt !!!
=(1/3+20/30)+(1/4+15/20)+(1/5+8/10)
=1+1+1
=2+1
=3
(1/3+ 20/30) + ( 1/4 + 15/20 ) + ( 1/5 + 8/10 )
= 1 + 1 + 1
= 3
ck bạn học tốt, tk mk nhé!
\(\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{8}{10}+\frac{15}{20}+\frac{20}{30}\)
= \(\frac{10}{30}+\frac{5}{20}+\frac{2}{10}+\frac{8}{10}+\frac{15}{20}+\frac{20}{30}\)
= \(\left(\frac{10}{30}+\frac{20}{30}\right)+\left(\frac{5}{20}+\frac{15}{20}\right)+\left(\frac{2}{10}+\frac{8}{10}\right)\)
= \(1+1+1\)
= \(3\)