\((\frac{9}{25}-2.18):\left(3\frac{4}{5}-0,2\right)\)

=-1,82 : 4

=-0,455

\(\left(\frac{9}{25}-2.18\right):\left(3\frac{4}{5}-0,2\right)\)

= -1,82:4=-0,455

tự tính đc mà (╬▔皿▔)╯

\(\left(\frac{9}{15}-2,18\right):\left(3\frac{4}{5}+0,2\right)=\left(0,6-2,18\right):\left(3,8+0,2\right)=-1,58:4=-0,395\)

= -8,91             

a) \(=-\frac{91}{50}:4\)

   \(=-\frac{91}{200}\)

b) \(=\frac{5}{18}-\frac{26}{5}+\frac{18}{5}\)

   \(=-\frac{119}{90}\)

\(\left(\frac{9}{25}-2,18\right):\left(3\frac{4}{5}+0,2\right)\)

\(=\left(-1,82\right):4\)

\(=-0,455\)

\(\left(\frac{9}{25}-2.18\right):\left(3\frac{4}{5}+0,2\right)\)

\(=\left(\frac{9}{25}-36\right):\left(\frac{19}{5}+0,2\right)\)

\(=\left(-\frac{891}{25}\right):4\)

\(=-\frac{891}{100}.\)

Chúc bạn học tốt!

\(\left(\dfrac{9}{25}-2.8\right):\left(\dfrac{19}{5}+0.2\right)\)

\(=\left(\dfrac{9}{25}-\dfrac{14}{5}\right):\left(\dfrac{19}{5}+\dfrac{1}{5}\right)\)

\(=\left(\dfrac{9-70}{25}\right):4\)

\(=\dfrac{-61}{25}:4=\dfrac{-61}{25}.\dfrac{1}{4}\)

\(=-\dfrac{61}{100}\)

\(\left(\dfrac{9}{25}-2.18\right):\left(\dfrac{19}{5}+0,2\right)\)

\(=\left(\dfrac{9}{25}-36\right):\left(\dfrac{19}{5}+0,2\right)\)

\(=\dfrac{-891}{25}:4=\dfrac{-891}{100}\)

1x\(10^{17}\)

100000000000000000

cho mik cách giải

(1-3)+(5-7)+(9-11)+....+(17-19)

=(-2)+(-2)+(-2)+...+(-2)

=(-2)x5

=-10

a, (\(\frac{9}{25}\) - 2.18) : (\(3\frac{4}{5}\) + 0,2)

 = (\(\frac{9}{25}\) - 36) : 4

 = \(\frac{-891}{25}\) :4

 = -8,91

                                        tạm thời làm tới đây

                                           Chúc bạn học tốt 

a) (925−2.18):(345+0,2)

 = (\(\frac{9}{25}\) - 36) : (\(\frac{19}{5}\) + 0,2)

= \(\frac{-891}{25}\) : 4

= \(\frac{-891}{100}\)

b) 518−1,456:725+4,5.45

 = \(\frac{5}{18}\) - (1,456 : \(\frac{7}{25}\)) + (4,5 . \(\frac{4}{5}\))

= \(\frac{5}{18}\) - \(\frac{26}{5}\) + \(\frac{18}{5}\)

= \(\frac{-443}{90}\) + \(\frac{18}{5}\)

= \(\frac{-119}{90}\).

a) \(\left(\frac{9}{25}-2.18\right):\left(3\frac{4}{5}+0,2\right)\)

\(=\left(\frac{9}{25}-36\right):\left(\frac{19}{5}+0,2\right)\)

\(=\left(-\frac{891}{25}\right):4\)

\(=-\frac{891}{100}\)

b)\(\frac{5}{18}-1,456:\frac{7}{25}+4,5.\frac{4}{5}\)

\(=\frac{5}{18}-\frac{26}{5}+\frac{18}{5}\)

\(=-\frac{119}{90}\)

^...^  ^_^