Question

60 - 3 ( x - 2 ) = 51

Answer 1

60 - 3 ( x - 2 ) = 51

=>3 ( x - 2) = 60 - 51

=> 3 ( x - 2 ) = 9

=> x - 2 = 9 : 3

=> x - 2 = 3

=> x = 3 + 2

=> x = 5.

Vậy x = 5.

Answer 2

60 - 3 (x - 2 ) = 51

3(x-2) = 60-51

3(x-2) = 9

x-2 = 9:3

x-2 = 3

x    = 3+2

Vậy x=5