Respuesta :

jenishak33

Answer:

I will just try

Step-by-step explanation:

3(2x+1)=12+3x

6x+3=12+3x

6x-3x=12-3

3x=6

x=6÷3

x=2

now,

3(2x+1)=12+3x

3(2×2+1)=12(3×2)

3×5=12×6

15=72