Question

\(\frac{1}{9}\)x \(\frac{2}{145}\)- \(4\frac{1}{3}\)x \(\frac{2}{145}\)+ \(\frac{2}{145}\)

a) \(\frac{11}{125}\)-\(\frac{17}{18}\)-\(\frac{5}{7}\)+ \(\frac{4}{9}\)+ \(\frac{17}{14}\)

b) 1 - \(\frac{1}{2}\)+ 2 - \(\frac{2}{3}\)+ 3 -\(\frac{3}{4}\)+ 4 -\(\frac{1}{4}\)- 3 - \(\frac{1}{3}\)-2 -\(\frac{1}{2}\)- 1

c) 26 : \(\orbr{\begin{cases}3:\left(0,2-0,1\right)\\2,5.\left(0,8+1,2\right)\end{cases}}\)+  \(\frac{\left(34,06-33,81\right).4}{6,84:\left(28,57-25,15\right)}\)tất cả +\(\frac{2}{3}:\frac{4}{21}\)

Answer 1

a)=\(\frac{1}{9}.\frac{2}{145}-\frac{13}{3}.\frac{2}{145}+\frac{2}{145}\)

   =\(\frac{2}{145}\left(\frac{1}{9}-\frac{13}{3}+1\right)\)

   =\(\frac{2}{145}.\frac{-29}{9}\)

   =\(\frac{-2}{45}\)

Học tốt nha!!!^^

Answer 2

giúp mình các bài còn lại với 

Answer 3

b)\(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)\(=\left(-\frac{17}{18}+\frac{4}{9}\right)+\left(\frac{-5}{7}+\frac{17}{14}\right)+\frac{11}{125}\)

                                                                        \(=-\frac{1}{2}+\frac{1}{2}+\frac{11}{125}\)

                                                                        \(=0+\frac{11}{125}\)

                                                                         \(=\frac{11}{125}\)

Chúc học tốt lần 2 nha^^

Answer 4

b)\(=\left(1-1\right)+\left(\frac{-1}{2}-\frac{1}{2}\right)+\left(2-2\right)+\left(\frac{-2}{3}-\frac{1}{3}\right)+\left(3-3\right)+\left(4-\frac{1}{4}\right)\)

     \(=0+\left(-1\right)+0+\left(-1\right)+0+\frac{3}{4}\)

     \(=-2+\frac{3}{4}\)

       \(=\frac{-5}{4}\)