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\(\frac{3x}{2}-\frac{1}{3}=\frac{2}{5}+x\)
\(\Leftrightarrow\frac{3}{2}x-x=\frac{2}{5}+\frac{1}{3}\)
\(\Leftrightarrow\frac{1}{2}x=\frac{11}{15}\)
\(x=\frac{11}{15}:\frac{1}{2}=\frac{22}{15}\)
\(\sqrt{\frac{1}{5}}+\sqrt{\frac{2}{5}}\)
\(=\frac{1}{\sqrt{5}}+\frac{\sqrt{2}}{\sqrt{5}}\)
\(=\frac{1+\sqrt{2}}{\sqrt{5}}\)
p/s: chúc bạn hok tốt
\(\frac{3}{2}\times\frac{4}{5}\times\frac{2}{6}\times\frac{15}{4}\)
\(=\frac{6}{5}\times\frac{2}{6}\times\frac{15}{4}\)
\(=\frac{2}{5}\times\frac{15}{4}\)
\(=\frac{3}{2}\)
\(\frac{8}{15}+\frac{16}{30}+\frac{3}{5}+\frac{9}{10}+2\frac{3}{5}\)
\(=\frac{8}{15}+\frac{16}{30}+\frac{3}{5}+\frac{9}{10}+\frac{13}{5}\)
\(=\frac{16+16+18+27+78}{30}\)
\(=\frac{155}{30}\)
\(=\frac{31}{6}\)
Hc tốt #
\(\frac{8}{15}\)+\(\frac{16}{30}\)+\(\frac{3}{5}\)+\(\frac{9}{10}\)+2\(\frac{3}{5}\)
=\(\frac{16}{30}\)+\(\frac{16}{30}\)+\(\frac{18}{30}\)+\(\frac{27}{30}\)+\(\frac{13}{5}\)
=\(\frac{16+16+18+27}{30}\)+\(\frac{78}{30}\)
=\(\frac{77}{30}\)+\(\frac{78}{30}\)= \(\frac{155}{30}\)
5/6 : 2/3
= 5/6 x 3/2
= 15/12
= 5/4
= \(\frac{15}{12}\)click dung cho minh nha