Respuesta :

Answer:

x = 4/30 or 7.5

Step-by-step explanation:

3(x + 4) = 7x - 18

3x + 12 = 7x - 18           Multiply 3 to x and 4

3x = 7x -30                  Subtract 12 from both sides

4x = 30                        Subtract 7x from both sides

x = 4/30                       Divide 30/4

or 7.5
3x+12=7x−18

12=7x−18−3x

12=4x−18

12+18=4x

30=4x

30/4 = x

15/2 = x

x = 15/2