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\(\dfrac{1}{3}+\dfrac{3}{4}+\dfrac{1}{2}=\dfrac{4}{12}+\dfrac{9}{12}+\dfrac{6}{12}=\dfrac{19}{12}\)
\(\dfrac{6}{8}+\dfrac{2}{4}+\dfrac{6}{24}=\dfrac{3}{4}+\dfrac{2}{4}+\dfrac{1}{4}=\dfrac{6}{4}=\dfrac{3}{2}\)
\(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{5}{6}=\dfrac{3}{6}+\dfrac{2}{6}+\dfrac{5}{6}=\dfrac{10}{6}=\dfrac{5}{3}\)
\(\dfrac{3}{5}+\dfrac{3}{2}+2=\dfrac{6}{10}+\dfrac{15}{10}+\dfrac{20}{10}=\dfrac{41}{10}\)
\(\dfrac{1}{3}+\dfrac{3}{4}+\dfrac{1}{2}=\dfrac{13}{12}+\dfrac{1}{2}=\dfrac{19}{12}\\ \dfrac{6}{8}+\dfrac{2}{4}+\dfrac{6}{24}=\dfrac{5}{4}+\dfrac{6}{24}=\dfrac{3}{2}\\ \dfrac{1}{2}+\dfrac{1}{3}+\dfrac{5}{6}=\dfrac{5}{6}+\dfrac{5}{6}=\dfrac{10}{6}\\ \dfrac{3}{5}+\dfrac{3}{2}+2=\dfrac{21}{10}+\dfrac{20}{10}=\dfrac{41}{10}\)
(10+20)+(2+8)+(4+6)=30+10+10
=50
1/3+1/6+4/3+2/6+2/3+5/6
=(1/3+4/3+2/3)+(1/6+2/6+5/6)
=7/3+8/6=7/3+4/3=11/3
\(\frac{3}{2}\cdot\frac{1}{6}+\frac{3}{2}\cdot\frac{2}{6}+\frac{3}{2}\cdot\frac{3}{6}\)
\(=\frac{3}{2}\cdot\left(\frac{1}{6}+\frac{2}{6}+\frac{3}{6}\right)\)
\(=\frac{3}{2}\cdot\frac{6}{6}\)
\(=\frac{3}{2}\cdot1=\frac{3}{2}\)
**** !
dãy phân số đc sắp xếp theo thứ tự từ lớn đến bé là :
a :2 / 3 ; 5 / 6 ; 4 / 2
b : 5 / 6 ; 2 / 3 ; 4 / 2
c : 4 / 2 ; 5 / 6 ; 2 / 3
d : 4 / 2 ; 2 / 3 ; 5 / 6
2/2 + 3/6 = 3/2 nhé
=3/2 nha