Question

d)2x - 138=2² 3²

Answer 1

d)2x-138=2².3²

⇔2x=36+138

⇔ x = 87 

Answer 2

2x - 138 = 36

2x           = 36 + 138

2x           =  174

  x           =   174 : 2

   x          =    87

Vậy x = 87

Answer 3

2x-138=2².3²

2x-138=4.9

2x-138=36

2x=36+138

2x=174

x=87

Answer 4

2x - 138 = 4.9

2x - 138 = 36

2x          = 36 + 138 

2x          = 174

  x          = 174 : 2

  Vậy x = 87.

Answer 5

\(2x-138=4.9\Rightarrow2x-138=36\Rightarrow2x=36+138=174\Rightarrow x=87\)