Question

Answer 1

=>3/5-x=-4/10+1/10=-3/10

=>x=3/5+3/10=6/10+3/10=9/10

Answer 2

C)=9/10

d)=19/5 hoặc -21/5

Answer 3

x=ba phần mười

Answer 4

c) \(\dfrac{15}{25}-x=\dfrac{2}{-5}+\dfrac{1}{10}\)

   \(\dfrac{15}{25}-x=\dfrac{-3}{10}\)

            \(x=\dfrac{15}{25}-\dfrac{-3}{10}\)

           \(x=\dfrac{9}{10}\)

vậy  x =....

d) \(\left(x+\dfrac{1}{5}\right)^2=16\)

    \(\left(x+\dfrac{1}{5}\right)=4\)

              \(x=4-\dfrac{1}{5}\)

              \(x=\dfrac{19}{5}\)

vậy x =...