\(118,24-\left(y\cdot3+y:5\right)=54,24\)

=>\(\left(y\cdot3+y\cdot0,2\right)=118,24-54,24\)

=>\(y\cdot3,2=64\)

=>\(y=\dfrac{64}{3,2}=20\)

118,24 - (x:5+x.3)= 54,24

x:5 + x.3 = 118,24 - 54,24 = 64

1/5 x + 15/5 x = 64 

16/5 x = 64 

x = 64 : 16/5 = 20

118,24 - ( x : 5 - x x 3 ) = 27,12 x 2

118,24 - ( x : 5 - x x 3 ) = 54,24

x : 5 - x x 3 = 118,24 - 54,24

x : 5 - x x 3 = 64

1/5x + 15/5x = 64

16/5x = 64

x = 64 : 16/5 = 20 = > x = 20

118,24 - ( \(x\)x \(\frac{1}{5}\)+ \(x\)x 3 ) = 54,24

\(x\)x ( \(\frac{1}{5}\)+ 3 )                       = 118,24 - 54,24 

\(x\)x \(\frac{16}{5}\)                              =  64 

         \(x\)                                   =  64 : \(\frac{16}{5}\)

          \(x\)                                  = 20 

mình cũng có kết quả giống bạn ấy 20

\(118,24-\left(x:5+x.3\right)=27,12.2\)

\(\Leftrightarrow118,24-\left(x:5+x.3\right)=54,24\)

\(\Leftrightarrow x:5+x.3=118,24-54,24\)

\(\Leftrightarrow x.\frac{1}{5}+x.3=64\)

\(\Leftrightarrow x.\left(\frac{1}{5}+3\right)=64\)

\(\Leftrightarrow x.\frac{16}{5}=64\)

\(\Leftrightarrow x=64:\frac{16}{5}\)

\(\Leftrightarrow x=20\)