{\(\frac{112}{200}\)+ 0,415} : 0,01

= {\(\frac{112}{200}+\frac{415}{1000}\)} : \(\frac{1}{100}\)

={\(\frac{560}{1000}\)+\(\frac{415}{1000}\)} : \(\frac{1}{100}\)

=\(\frac{975}{1000}\): \(\frac{1}{100}\)

=\(\frac{975}{1000}\)x\(\frac{100}{1}\)

=\(\frac{97500}{1000}\)=\(97,5\)

\(\frac{1}{2}-37,5+3-\frac{1}{6}\)

=\(\frac{1}{2}-\frac{375}{10}+\frac{3}{1}-\frac{1}{6}\)

=\(\frac{15}{30}-\frac{1125}{30}+\frac{90}{30}-\frac{5}{30}\)

=\(\frac{15-1125+90-5}{30}\)

=\(\frac{\left(-1110\right)+85}{30}\)

=\(\frac{-1025}{30}\)

Mik ko chắc!!!

{112/200+0,415}:0,01

=39/40:0,01

=9750

Ta có:

 = (0,6 + 0,415 + 0,005) : 0,01 = 1,02 : 0,01 = 102.

Biểu thức trở thành:

Vậy x = -4.

dấu / này là dấu gì vậy ?

\(\left(\frac{11}{200}+\frac{83}{200}\right):\frac{7}{75}-\frac{149}{4}+\frac{31}{6}\)

\(\frac{94}{200}:\frac{7}{75}-\frac{149}{4}+\frac{31}{6}\)

\(\frac{141}{28}-\frac{149}{4}+\frac{31}{6}\)

\(\frac{-451}{14}+\frac{31}{6}=-27\frac{1}{21}\)

Ta làm vế kia trước:

\(\left(\frac{3}{5}+0,415+\frac{1}{200}\right):0,01=\left(\frac{3}{5}+\frac{83}{200}+\frac{1}{200}\right):0,01\)

\(=\left(\frac{120}{200}+\frac{83}{200}+\frac{1}{200}\right):0,01\)

\(=\frac{204}{200}:\frac{1}{100}=\frac{51}{50}.100=102\)

=>  \(\left(\frac{1}{12}+\frac{19}{6}-30,75\right).x-8=102\)

   \(\left(\frac{1}{12}+\frac{19}{6}-\frac{123}{4}\right).x=102+8=110\)

    \(\left(\frac{1}{12}+\frac{38}{12}-\frac{369}{12}\right).x=110\)

     \(-\frac{330}{12}.x=110\)

     \(-\frac{55}{2}.x=110\)

     \(x=110:-\frac{55}{2}=110.-\frac{2}{55}=-4\)

**** CHO MK NHA , TKS ^^

\(=\left(\frac{120}{200}+\frac{83}{200}-\frac{3}{200}\right).\frac{8}{3}.\frac{1}{4}\)

\(=\frac{2}{3}\)