Respuesta :

Answer:

  x  = -12

Step-by-step explanation:

Given expression:

        -45 = 5(x + 3)

the solution of an algebraic expression is the value(s) that makes the expression true.

 In this problem, let us solve for x;

                -45 = 5(x + 3)  

   Applying the distributive property on the right hand side;

                -45  = 5x + 15

  Now, add (-15) to both sides of the expression;

               -45 + (-15) = 5x + 15 + (-15)

                -45 - 15  = 5x

                    -60    = 5x

Then  divide both sides by 5;

                x  = -12