Question

Mình sẽ cho 5⭐

Answer 1

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Answer 2

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Answer 3

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Answer 4

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Answer 5

1/

\(-\dfrac{4}{5}< \dfrac{2}{5}\)

2/

\(a,\dfrac{1}{5}+\dfrac{3}{5}=\dfrac{4}{5}\)

\(b,-\dfrac{1}{3}+\dfrac{4}{5}=-\dfrac{5}{15}+\dfrac{12}{15}=\dfrac{7}{15}\)

\(c,\dfrac{2}{7}-\dfrac{3}{7}=-\dfrac{1}{7}\)

3/

\(a,-\dfrac{9}{10}\)

\(b,\dfrac{13}{7}\)

Answer 6

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Answer 7

\(\dfrac{-4}{5}< \dfrac{2}{5}\)