a,\(\frac{15}{34}\)+\(\frac{7}{21}\)+\(\frac{19}{34}\)-\(\frac{19}{35}1\)+\(\frac{2}{3}\)
b,(2,5)\(^3\).(-2)\(^3\)+2496\(^5\):(-832)\(^5\)-98\(^{17}\):(98)\(^{16}\)
c,\(\frac{3}{4}\).\(\frac{1}{5}26\)-\(\frac{3}{4}\).\(\frac{1}{5}44\)
d,(-2)\(^3\).(\(\frac{3}{4}\)-0,25):(\(\frac{1}{4}2\)-\(\frac{1}{6}1\))
e,\(\frac{1}{7}\).\(\frac{-3}{8}\)+\(\frac{-13}{8}\).\(\frac{1}{7}\)
f,9.(\(\frac{1}{3}\))\(^3\):[(\(\frac{-2}{3}\))\(^2\)+0,5-\(\frac{1}{2}1\)]
e) \(\frac{1}{7}.\frac{-3}{8}+\frac{-13}{8}.\frac{1}{7}\)
\(=\frac{1}{7}.\left[\left(-\frac{3}{8}\right)+\left(-\frac{13}{8}\right)\right]\)
\(=\frac{1}{7}.\left(-2\right)\)
\(=-\frac{2}{7}.\)
Chúc bạn học tốt!
