Question

-x + 25% . x = -1,4

Nhanh nha!

Answer 1

-x+25%.x=-1,4

-x(1-25%)=-1,4

-x.\(\frac{3}{4}\)=-\(\frac{7}{5}\)

-x=(-\(\frac{7}{5}\):\(\frac{3}{4}\))

-x=-\(\frac{28}{15}\)

=>x=\(\frac{28}{15}\)

 

Answer 2

(=) X.(-1+1/4)=-1,4

(=)X.-3/4=-1,4

(=)X=-1,4:-3/4

(=)X=28/15

Answer 3

-x+25%.x=-1,4

x.(-1+1/4)=-1,4

x.-3/4       =-1,4

x               =-1,4:-3/4

x               =28/15

Answer 4

ta có: 

=> -x . 1 + 0,25 . x = - 1,4

=> x . -1 + 0,25 . x = -1,4

=> x. ( - 1 + 0,25 ) = - 1,4

=> x . ( - 1,25 ) = - 1,4 

=> x = - 1,4 : ( - 1,25 )

=> x = 1,12

Vậy x = 1,12