Question

tìm x

3x-51=2x+9

 

Answer 1

3x-51=2x+9

3x-2x=9+51

x=60

vậy x=60

Answer 2

3x-51=2x+9

3x-2x=9+51

x=60

vậy x=60

Answer 3

Ta có

    3x-51=2x+9

     x-51=9 ( trừ cả hai vế cho 2x)

       x=60

Answer 4

3x-51=2x+9

3x-2x=9+51

x=60

Answer 5

3x-51=2x+9

3x-2x=9+51

3x-2x=60

x(3-2)=60

x.1=60

vậy x=60