Question

0,75-0,6+3/7+3/13/2,75-2,2+11/7+11/13

Answer 1

0,75-0,6+\(\frac{3}{7}+\frac{3}{\frac{13}{2,75}}\) -2,2+\(\frac{11}{7}\) +\(\frac{11}{13}\)

=\(\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{11}{16}-\frac{11}{5}+\frac{11}{7}+\frac{11}{3}\)

= \(\left(\frac{11}{16}+\frac{3}{4}\right)+\left[\left(\frac{-3}{5}\right)-\frac{11}{5}\right]+\left(\frac{3}{7}+\frac{11}{7}\right)+\frac{11}{3}\)

= \(\frac{23}{16}-\frac{14}{5}+2+\frac{11}{3}\)

=\(\left(\frac{23}{16}+2\right)+\left[\left(\frac{-14}{5}\right)+\frac{11}{3}\right]\)

=\(\frac{55}{16}+\frac{13}{15}\)

\(\approx\) 4,3

chúc bạn học good (like nink nha)

 

Answer 2

cái gì vậy