Question

Tìm X:

X x 2 + X x 5 = 49

Answer 1

X x 2 + X x 5 = 49

=>  X x (2 + 5) = 49

=>  X = 49 : 7

=>  X = 7

Answer 2

X x 2 + X x 5 = 49

X x ( 2 + 5 ) = 49

X x 7 = 49

X      = 49 : 7

X      = 7

Answer 3

X x 2 + X x 5 = 49

X x ( 2 + 5 ) = 49

X x 7 = 49

X = 49 : 7

X = 7

Vậy X = 7

Answer 4

X x 2 + X x 5 = 49

X x ( 2 + 5 ) = 49

X x 7 = 49

X  =  49 : 7

X = 7

Answer 5

X x 2 + X x 5 = 49

 ( 2 + 5 ) x X = 49

    7   x    X   = 49

              X   = 49 : 7

              X   =    7

Answer 6

X x 2 + X x 5 = 49

X x ( 2 + 5 )   = 49

X x 7             = 49

X                  = 49 : 7

X                  = 7

Answer 7

Theo bài ra , ta có : 

X x 2 + X x 5 = 49

=>  X x (2 + 5) = 49

=>  X = 49 : 7

=>  X = 7

Answer 8

X x 2 x 5 = 49

X x (2+5) = 49

X x 7       = 49

          X = 49 : 7

           X = 7

Answer 9

Xx2+Xx5=49

Xx(2+5)=49

Xx7=49

X=49:7=7

Vậy X=7

Answer 10

X x 2 + X x 5 = 49

 X x ( 2 + 5 ) = 49

  X  x    7      = 49

                 x = 49 : 7

                 x = 7