Question

a) 2. x - 138 = 2^3 . 3^2

Answer 1

2.x-138=2^3.3^2

2.x-138=8.9

2.x-138=72

2.x       =72+138

2.x      =210

  x        = 210:2

 x         = 105

Vậy x=105

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Answer 2

2x - 138 = 2³.3²

2x - 138 = 8.9

2x - 138 = 72

2x = 72 + 138

2x = 210

x = 210 : 2

x = 105

Answer : 105

Answer 3

2.x-138=72

2x=138+72

2x=210

x=105

Answer 4

 x         = 105