Question

Tìm x ,biết :

7 . ( x - 14 ) + 35 = 279 : 9

Answer 1

\(7.\left(x-14\right)+35=279:9\)

\(7.\left(x-14\right)+35=31\)

\(7.\left(x-14\right)=31-35\)

\(7.\left(x-14\right)=-4\)

\(\left(x-14\right)=-4:7\)

\(\left(x-14\right)=-\frac{4}{7}\)

\(x=-\frac{4}{7}+14\)

\(=\frac{94}{7}\)

Answer 2

7. (x - 14) + 35 = 279 : 9

7. (x-14) + 35 = 31

7.(x-14)      = 31-35

7. (x - 14)      = -4

x - 14            = -4 : 7

x - 14            = - 0,6

x                 = -0,6 + 14

x                 = 13,4

Answer 3

7 . ( x - 14 ) + 35 = 279 : 9

7 . ( x - 14 ) + 35 = 31

7 . ( x - 14 ) = 31 - 35

7 . ( x - 14 ) = -4

x - 14 = - 4 : 7

x - 14 = \(\frac{-4}{7}\)

x = \(\frac{-4}{7}+14\)

x = \(\frac{94}{7}\)

Answer 4

7.( x-14)+35= 279:9

7.(x-14)+.35= 31

     7(x-14)   = 31-35

     7 ( x-14) = -4

         (x-14 )= -4:7

          (x-14)= -4/7

                 x= -4/7 + 14

                 x= 94/7

Vậy x= 94/7