\(\dfrac{4}{5}+x=\dfrac{2}{3}-\dfrac{11}{15}\)
\(\dfrac{4}{5}+x=\dfrac{10}{15}-\dfrac{11}{15}=-\dfrac{1}{15}\)
\(x=\dfrac{-1}{15}-\dfrac{4}{5}=\dfrac{-1}{15}-\dfrac{12}{15}=\dfrac{-13}{15}\)
\(\dfrac{2}{3}+x=\dfrac{11}{15}+\dfrac{4}{5}\)
\(\dfrac{2}{3}+x=\)\(\dfrac{23}{15}\)
\(x=\dfrac{23}{15}-\dfrac{2}{3}\)
\(x=\dfrac{13}{15}\)
\(\dfrac{2}{3}-\dfrac{4}{5}+x=\dfrac{11}{15}\)
\(\dfrac{4}{5}+x=\)\(\dfrac{2}{3}-\dfrac{11}{15}\)
\(\dfrac{4}{5}+x=\)\(-\dfrac{1}{15}\)
x = \(-\dfrac{1}{15}-\dfrac{4}{5}\)
\(x=\dfrac{-13}{15}\)
câu này dẽ sẽ có nhìu người trl nhé bn
`2/3 - 4/5 + x = 11/15`
`=> -2/15 + x = 11/15`
`=> x = 11/15 + 2/15`
`=> x = 13/15`
ở đoạn `11/15 - (-2/15) = 11/15 + 2/15` mik dùng quy tắc chuyển vế nhé
