Question

2*x+45=7

tìm x

Answer 1

2.x + 45 = 7

2.x = 7 - 45

2.x = -38

x = -38 : 2

x = -19

Answer 2

2x + 45 =7

2x = 7 - 45

2x = -38

x= -38 :2

x= -19

Answer 3

2*x+45=7

=>2*x  =7-45

=>2*x  =-38

=>x      =(-38):2

=>x      =-19

Answer 4

2x + 45 = 7

2x = 7 - 45

2x = -38

x = -38 : 2

x = -19

Answer 5

2 . x + 45 = 7

2.x = 7 - 45

2.x = -38

x = -38 : 2

x = -19

vậy x = -19

Answer 6

2×X+45=7

2x         =7-45=-38

  =>    x = -38:2 = -19

      Vậy x= -19

Answer 7

2x+45=7

     2x=7-45

     2x=-38

       x=-38:2

       x=-19

Answer 8

2x=7-45

2x= - 38

x= -19

Answer 9

2.x+45=7

2.x=45-7

2.x=38

x=38:2
x=18

Chuẩn đó nhé!Chúc bạn thành công!

 

Answer 10

2 * x + 45 = 7

2 * x = 7 - 45 = -38

x = -38 : 2 = -19

Answer 11

2x+45=7

      2x=7-45

       2x=-38

          x=-19

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