5/33;7/15+5/33+14/3
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\(\frac{5}{17}.\frac{16}{33}+\frac{5}{33}.\frac{20}{17}-\frac{2}{17}.\frac{5}{33}\)
\(=\frac{5}{17}.\frac{16}{33}+\frac{5}{17}.\frac{20}{33}-\frac{5}{17}.\frac{2}{33}\)
\(=\frac{5}{17}.\left(\frac{16}{33}+\frac{20}{33}-\frac{2}{33}\right)\)
\(=\frac{5}{17}.\frac{34}{33}\)
\(=\frac{10}{33}\)
Chúc bạn học tốt !!!
33.(17 – 5) – 17.(33 -5)
= 33. 17 – 33.5 – 17.33 + 17.5
= (33.17 – 33. 17) + ( 17.5 – 33.5)
= 0 + 5.(17- 33)
= 5.(- 16) = -80
= 33.17 - 33.5 - 17.33 + 17.5
= 17.5 - 33.5
= 5.(17 - 33)
= 5.(-16)
= -80
33.(17 - 5)-17.(33-5)
33.12-17.28
=396-476
= - 80
tk cho mình nha
33.(17-5) - 17. (33-5)
=33.17-33.5-17.33+17.5
=16.5
=90
tick nhé
Ta có: \(B=\dfrac{11}{13}\cdot\dfrac{40}{13}+\dfrac{37}{5}:\dfrac{7}{33}-\left(\dfrac{11}{13}+\dfrac{33}{7}:\dfrac{5}{2}\right)\)
\(=\dfrac{440}{169}+\dfrac{37}{5}\cdot\dfrac{33}{7}-\dfrac{11}{13}-\dfrac{33}{7}\cdot\dfrac{2}{5}\)
\(=\dfrac{297}{169}+\dfrac{33}{7}\cdot\left(\dfrac{37}{5}-\dfrac{2}{5}\right)\)
\(=\dfrac{297}{169}+\dfrac{33}{7}\cdot7\)
\(=\dfrac{297}{169}+33=\dfrac{5874}{169}\)
5/33:7/15+5/33+14/3
= 5/33.15/7+5/33+14/3
=5/33.(15/7+1)+14/3
=5/33.22/7+14/3
=10/21+14/3
=36/7