Question

tìm x :

11/12 - ( 2/5 + x ) = 2/3

Answer 1

\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)

\(\frac{2}{5}+x=\frac{11}{12}-\frac{2}{3}\)

\(\frac{2}{5}+x=\frac{11}{12}-\frac{8}{12}\)

\(\frac{2}{5}+x=\frac{1}{4}\)

\(x=\frac{1}{4}-\frac{2}{5}\)

\(x=\frac{5}{20}-\frac{8}{20}\)

\(x=-\frac{3}{20}\)

Answer 2

11/12-(2/5+x)=2/3

2/5+x=11/12-2/3

2/5+x=1/4

x=1/4-2/5

x=-3/20

Answer 3

kết quả đúng là

x = \(\frac{-3}{20}\)

đáp số.........

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Answer 4

\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)

\(\frac{2}{5}+x=\frac{11}{12}-\frac{2}{3}=\frac{1}{4}\)

\(x=\frac{1}{4}-\frac{2}{5}=-\frac{3}{20}\)

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Answer 5

thanks tất cả nha

Answer 6

\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)

                   \(\frac{2}{5}+x=\frac{11}{12}-\frac{2}{3}\)

                   \(\frac{2}{5}+x=\frac{1}{4}\)

                              \(x=\frac{1}{4}-\frac{2}{5}\)

                              \(x=\frac{-3}{20}\)

Answer 7

\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)

\(\Rightarrow\)     \(\left(\frac{2}{5}+x\right)=\frac{11}{12}-\frac{2}{3}\)

\(\Rightarrow\)      \(\frac{2}{5}+x=\frac{1}{4}\)

\(\Rightarrow\)                \(x=\frac{1}{4}+\frac{2}{5}\)

\(\Rightarrow\)                \(x=-\frac{3}{20}\)

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