Respuesta :

Answer:

12x+45

Step-by-step explanation:

3(4x+15)

multiply whatever is in the brackets with what is outside.

3×4x =12x

Now you need to do the same with the other side. Multiply the number outside the brackets with what is inside

3×(+)15 =+45

Put it together and it makes:

12x+45.

I hope this helped you and if you need any help, you can just ask me. x

Answer:

x= -3.75

Step-by-step explanation:

Writing the equation in standard form

                   [tex]3(4x+15)=0[/tex]

Solving the equation to find the value of 'x'

                          [tex]12x+45=0\\12x=-45\\x=-45/12\\x=-3.75[/tex]

So, for the given equation the simplified equation gives the value of x= -3.75