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1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9=135
\(\frac{1}{2}\)+ \(\frac{5}{6}\)=\(\frac{6}{12}\)+ \(\frac{10}{12}\)= \(\frac{16}{12}\) = \(\frac{4}{3}\)
\(\frac{5}{3}\)-\(\frac{2}{4}\)= \(\frac{20}{12}\)- \(\frac{6}{12}\)= \(\frac{14}{12}\)= \(\frac{7}{6}\)
\(\frac{1}{6}\)x \(\frac{2}{8}\)= \(\frac{1}{24}\)
\(\frac{2}{7}\): \(\frac{1}{5}\)= \(\frac{2}{7}\)x \(\frac{5}{1}\)= \(\frac{10}{7}\)
1/2 + 5/6 =4/3
5/3 - 2/4 =7/6
1/6 . 2/8 =1/24
2/7 : 1/5 =10/7
(1 + 1) - (2 + 2) - (3 - 3) - 4 + 4 - 5 + 5 - 6 + 6 = - 2
tích bạn nha
giai :
(1 + 1) - (2 + 2) - (3 - 3) - 4 + 4 - 5 + 5 - 6 + 6 = - 2
tích bạn nha !!!
\(\dfrac{2}{5}+\dfrac{2}{3}+\dfrac{2}{4}\)
= \(\dfrac{24}{60}\) + \(\dfrac{40}{60}\) + \(\dfrac{30}{60}\)
= \(\dfrac{64}{60}\) + \(\dfrac{30}{60}\)
= \(\dfrac{47}{30}\)
\(\dfrac{2}{6}+\dfrac{3}{12}\)
= \(\dfrac{4}{12}\) + \(\dfrac{3}{12}\)
= \(\dfrac{7}{12}\)
\(\dfrac{5}{6}\) + \(\dfrac{1}{3}\)
= \(\dfrac{5}{6}\) + \(\dfrac{2}{6}\)
= \(\dfrac{7}{6}\)
\(\dfrac{1}{3}\) + \(\dfrac{5}{12}\) + \(\dfrac{5}{6}\)
= \(\dfrac{4}{12}\) + \(\dfrac{5}{12}\) + \(\dfrac{10}{12}\)
= \(\dfrac{9}{12}\) + \(\dfrac{10}{12}\)
= \(\dfrac{19}{12}\)
\(\dfrac{5}{8}\) + \(\dfrac{4}{7}\)
= \(\dfrac{35}{56}\) + \(\dfrac{32}{56}\)
= \(\dfrac{67}{56}\)
\(\dfrac{7}{3}\) + \(\dfrac{8}{7}\)
= \(\dfrac{49}{21}\) + \(\dfrac{24}{21}\)
= \(\dfrac{73}{21}\)
\(\dfrac{1}{5}+\dfrac{5}{35}\)
= \(\dfrac{7}{35}\) + \(\dfrac{5}{35}\)
= \(\dfrac{12}{35}\)
1 + 1 + 2 + 6 + 6 + 5 = 21
~ HT~
1+1+2+6+6+5=21
Vậy kết quả bằng 21
Chúc bạn học tốt
~HT~