\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)
\(\frac{2}{5}+x=\frac{11}{12}-\frac{2}{3}\)
\(\frac{2}{5}+x=\frac{11}{12}-\frac{8}{12}\)
\(\frac{2}{5}+x=\frac{1}{4}\)
\(x=\frac{1}{4}-\frac{2}{5}\)
\(x=\frac{5}{20}-\frac{8}{20}\)
\(x=-\frac{3}{20}\)
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
kết quả đúng là
x = \(\frac{-3}{20}\)
đáp số.........
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\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)
\(\frac{2}{5}+x=\frac{11}{12}-\frac{2}{3}=\frac{1}{4}\)
\(x=\frac{1}{4}-\frac{2}{5}=-\frac{3}{20}\)
~ Chúc bạn học tốt ~
\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)
\(\frac{2}{5}+x=\frac{11}{12}-\frac{2}{3}\)
\(\frac{2}{5}+x=\frac{1}{4}\)
\(x=\frac{1}{4}-\frac{2}{5}\)
\(x=\frac{-3}{20}\)
\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)
\(\Rightarrow\) \(\left(\frac{2}{5}+x\right)=\frac{11}{12}-\frac{2}{3}\)
\(\Rightarrow\) \(\frac{2}{5}+x=\frac{1}{4}\)
\(\Rightarrow\) \(x=\frac{1}{4}+\frac{2}{5}\)
\(\Rightarrow\) \(x=-\frac{3}{20}\)
chúc bạn học giỏi