Question

\(x+\dfrac{7}{10}=\dfrac{7}{15}.\dfrac{-3}{5}\)

Answer 1

=>x+7/10=-21/75=-7/15

=>x=-7/15-7/10=-14/30-21/30=-35/30=-7/6

Answer 2

x + 7/10 = -7/25

         x   = -7/25 - 7/10 

         x   = -49/50

         vậy x =....

Answer 3

\(x+\dfrac{7}{10}=\dfrac{7}{15}\cdot\dfrac{-3}{5}\)

\(x+\dfrac{7}{10}=-\dfrac{7}{25}\)

\(x=\dfrac{\left(-7\right)}{25}-\dfrac{7}{10}\)

\(x=-\dfrac{49}{50}\)

Answer 4

Ta có:

     x + \(\dfrac{7}{10}\) = \(\dfrac{7}{15}\).\(\dfrac{-3}{5}\)

⇔ x + \(\dfrac{7}{10}\) = \(\dfrac{7}{5}\). \(\dfrac{-1}{5}\)

⇔ x + \(\dfrac{7}{10}\) = - \(\dfrac{7}{25}\)

⇔ x = \(\dfrac{-7}{25}\) - \(\dfrac{7}{10}\)

\(\Leftrightarrow\) x = -0,98

Answer 5

x+710=−725x+710=−725

x=−4950