Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Lời giải:
$25.6+5.5.29-45.5=25.6+25.29-9.25$
$=25(6+29-9)=25.26=650$
#)Giải :
1,25 : 15/20 + 25% - 5/6
= 5/4 : 3/4 + 1/4 - 5/6
= 5/3 + 1/4 - 5/6
= 23/12 - 5/6
= 13/12
#~Will~be~Pens~#
1,25 : \(\frac{15}{20}\)+ 25% - \(\frac{5}{6}\)
= \(\frac{5}{4}\): \(\frac{3}{4}\)+\(\frac{1}{4}\)- \(\frac{5}{6}\)
= \(\frac{5}{4}\)x\(\frac{4}{3}\)+\(\frac{1}{4}\)-\(\frac{5}{6}\)
= \(\frac{5}{3}\)+\(\frac{1}{4}\)-\(\frac{5}{6}\)
= \(\frac{20+3}{12}\)-\(\frac{5}{6}\)
= \(\frac{23}{12}\)-\(\frac{5}{6}\)
= \(\frac{23-10}{12}\)
= \(\frac{13}{12}\)
\(\left(6-\frac{14}{5}\right).\frac{25}{8}-\frac{8}{5}:\frac{1}{4}\)
=\(\left(\frac{6}{1}+\frac{-14}{5}\right).\frac{25}{8}-\frac{8}{5}:\frac{1}{4}\)
=\(\frac{16}{5}.\frac{25}{8}-\frac{8}{5}:\frac{1}{4}\)
=\(\frac{16.25}{5.8}-\frac{8}{5}.\frac{4}{1}\)
=\(\frac{2.8.5.5}{5.8}-\frac{32}{5}\)
=\(2.5-\frac{32}{5}\)
=\(10-\frac{32}{5}\)
=\(\frac{10}{10}+\frac{-32}{5}\)
=\(\frac{10}{10}+\frac{-46}{10}\)
=\(\frac{-36}{10}\)
=\(\frac{18}{5}\)
\(\frac{6}{25}-\frac{81}{25}+\left|-4\right|\cdot\frac{2}{7}-(-2)^3\)
\(\Rightarrow\frac{6-81}{25}+4\cdot\frac{2}{7}-(-2)^3\)
\(=\frac{-75}{25}+\frac{8}{7}+8\)
\(=3+\frac{8}{7}+8=3+8+\frac{8}{7}=11+\frac{8}{7}=\frac{77+8}{7}=\frac{85}{7}\)
\(\frac{6}{25}-\frac{81}{25}+|-4|.\frac{2}{7}-\left(-2\right)^3\)
\(=\frac{6-81}{25}+4.\frac{2}{7}-\left(-8\right)\)
\(=\frac{-75}{25}+\frac{8}{7}+8\)
\(=-3+\frac{8}{7}+8\)
\(=5+\frac{8}{7}=\frac{35}{7}+\frac{8}{7}=\frac{35+8}{7}=\frac{43}{7}\)
150