Question

Giúp mình bài toán này nha, nhớ ghi cả lời giải:

75%.x+\(\frac{1}{5}\).x=\(\frac{1}{6}\)

Answer 1

Ta có: 75%.x + \(\frac{1}{5}\).x = \(\frac{1}{6}\)

          \(\frac{3}{4}\cdot x+\frac{1}{5}\cdot x=\frac{1}{6}\)

           \(x\left(\frac{3}{4}+\frac{1}{5}\right)=\frac{1}{6}\)

           \(\frac{19}{20}x=\frac{1}{6}\) 

            \(x=\frac{1}{6}:\frac{19}{20}=\frac{10}{57}\)

tích nha

Answer 2

75%.x+1/5.x=1/6                                             3/4.x+1/5.x=1/6                                               x.(3/4+1/5)=1/6                  :                                        x.19/20=1/6 suy ra x=1/6:19/20=1/6.20/19=10/57

Answer 3

\(75\%.x+\frac{1}{5}x=\frac{1}{6}\)

\(\Rightarrow\frac{3}{4}x+\frac{1}{5}x=\frac{1}{6}\)

\(\Rightarrow\left(\frac{3}{4}+\frac{1}{5}\right)x=\frac{1}{6}\)

\(\Rightarrow\left(\frac{15}{20}+\frac{4}{20}\right)x=\frac{1}{6}\)

\(\Rightarrow\frac{19}{20}x=\frac{1}{6}\)

\(\Rightarrow x=\frac{1}{6}:\frac{19}{20}\)

\(\Rightarrow x=\frac{1}{6}.\frac{20}{19}=\frac{10}{57}\)

Answer 4

\(\frac{3}{4}\).x + \(\frac{1}{5}\).x = \(\frac{1}{6}\)

(\(\frac{3}{4}\)+ \(\frac{1}{5}\)) . x = \(\frac{1}{6}\)

\(\frac{19}{20}\).x = \(\frac{1}{6}\)

               x = \(\frac{1}{6}\): \(\frac{19}{20}\)

                x = \(\frac{10}{57}\)

Answer 5

\(75\%\times x+\frac{1}{5}\times x=\frac{1}{6}\)

\(\Rightarrow\frac{3}{4}\times x+\frac{1}{5}\times x=\frac{1}{6}\)

\(\Rightarrow\left(\frac{3}{4}+\frac{1}{5}\right)\times x=\frac{1}{6}\)

\(\Rightarrow\frac{19}{20}\times x=\frac{1}{6}\)

\(\Rightarrow x=\frac{1}{6}\div\frac{19}{20}\)

\(\Rightarrow x=\frac{10}{57}\)