Question

 tìm x, biết:

a. x - 2/3 = -1/5

b. 1/2 - x = -2/3

Answer 1

a. \(x-\dfrac{2}{3}=\dfrac{-1}{5}\)

\(=>x=\dfrac{-1}{5}+\dfrac{2}{3}=\dfrac{-3}{15}+\dfrac{10}{15}\)

\(=>x=\dfrac{7}{15}\)

b. \(\dfrac{1}{2}-x=\dfrac{-2}{3}\)

\(=>x=\dfrac{1}{2}-\dfrac{-2}{3}=\dfrac{3}{6}+\dfrac{4}{6}\)

\(=>x=\dfrac{7}{6}\)

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