Question

9,5 - {3  2/5 + 4,}

Answer 1

3  2/5 là sao bn

Answer 2

9,5 - (\(3\dfrac{2}{5}\) + 4)

= \(9,5-\left(\dfrac{17}{5}+4\right)\)

= \(9,5-\left(\dfrac{17}{5}+\dfrac{20}{5}\right)\)

= \(9,5-\left(\dfrac{17+20}{5}\right)\)

= \(9,5-\dfrac{37}{5}\)

= \(\dfrac{47,5}{5}-\dfrac{37}{5}\)

= \(\dfrac{47,5-37}{5}\)

= \(\dfrac{10,5}{5}=2,1\)

Answer 3

\(\dfrac{9}{5}-\left(3+\dfrac{2}{5}+4\right)\)

\(=\dfrac{9}{5}-7-\dfrac{2}{5}\)

\(=\dfrac{7}{5}-\dfrac{35}{5}=-\dfrac{28}{5}\)

Answer 4

=9,5-(17/5+4)

=9,5-37/5

=21/10