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\(\frac{1}{2}\left(6x-5\right)-5x=1\frac{3}{5}\)
\(\Rightarrow6x.\frac{1}{2}-5.\frac{1}{2}-5x=\frac{8}{5}\)
\(\Rightarrow3x-\frac{5}{2}-5x=\frac{8}{5}\)
\(\Rightarrow3x-5x=\frac{8}{5}+\frac{5}{2}\)
\(\Rightarrow-2x=\frac{16}{10}+\frac{25}{10}\)
\(\Rightarrow-2x=\frac{41}{10}\)
\(\Rightarrow x=\frac{41}{10}:-2\)
\(\Rightarrow x=\frac{41}{10}.\frac{1}{-2}\)
\(\Rightarrow x=-\frac{41}{20}\)
Vậy \(x=-\frac{41}{20}\)
Chúc bạn học tốt !!!!
a) \(x-\frac{4}{5}=\frac{5}{7}\)
\(x=\frac{5}{7}+\frac{4}{5}=\frac{53}{35}\)
b) \(5x=-\frac{1}{5}\)
\(x=-\frac{1}{5}:5=-\frac{1}{25}\)
c) \(\frac{5}{3}-x=7+\frac{4}{5}\)
\(\frac{5}{3}-x=\frac{39}{5}\)
\(x=\frac{5}{3}-\frac{39}{5}=-\frac{92}{15}\)
d) \(-\frac{5}{11}+2x=\frac{7}{22}\)
\(2x=\frac{7}{22}+\frac{5}{11}\)
\(2x=\frac{17}{22}\)
\(x=\frac{17}{22}:2\)
\(x=\frac{17}{44}\)
\(x=-\frac{1}{5}:5\)
NÈ BẠN!!!
a) \(x-\frac{4}{5}=\frac{5}{7}\)
\(x=\frac{5}{7}+\frac{4}{5}=\frac{25}{35}+\frac{28}{35}=\frac{53}{35}\)
b) \(5x=-\frac{1}{5}+\frac{11}{5}\)
\(5x=2\)
\(x=\frac{2}{5}\)
c)\(\frac{5}{3}-x=7\)
\(x=\frac{5}{3}-7=\frac{5}{3}-\frac{21}{3}=-\frac{16}{3}\)
d) \(-\frac{5}{11}+2x=\frac{7}{22}\)
\(2x=\frac{7}{22}-\frac{-5}{11}=\frac{7}{22}-\frac{-10}{22}=\frac{17}{22}\)
\(x=\frac{17}{22}:2=\frac{17}{22}\cdot\frac{1}{2}=\frac{17}{44}\)
K CHO MÌNH NHA!!!
Số lẻ wá ( chả chắc lắm )
\(\frac{3x}{4}+\frac{x}{1}-\frac{6x}{7}=\frac{18}{25}\)=> \(\frac{21x+28x-24x}{28}=\frac{18}{25}\)( quy đồng để có mẫu chung là 28 )
=> \(\frac{25x}{28}=\frac{18}{25}=>625x=504\)=> x = \(\frac{504}{625}=0,8064\)Nếu sai sót thì sorry , mình chỉ làm thế thôi !
\(\Rightarrow\left(6x-5\right)\cdot-5=\left(5x-3\right)\cdot-7\)
\(\Rightarrow-30x+25=-35x+21\)
\(\Rightarrow-30x+35x=21-25\)
\(\Rightarrow5x=-4\)
\(\Rightarrow x=-\frac{4}{5}=-0,8\)
\(\frac{6x-5}{-7}=\frac{5x-3}{-5}\)
\(\Rightarrow-5.\left(6x-5\right)=-7.\left(5x-3\right)\)
\(\Rightarrow-30x+25=-35x+21\)
\(\Rightarrow25-21=-35x+30x\)
\(\Rightarrow4=-5x\)
\(\Rightarrow x=-\frac{5}{4}\)
Vậy : \(x=-\frac{5}{4}\)