Respuesta :

Answer:

-3

Step-by-step explanation:

7x+9=5x+3

2x+9=3

2x=-6

x=-3

ricchad

Answer:

equation is  7x +9 = 5x +3

x = -3

Step-by-step explanation:

7x +9 = 5x +3

combine like terms

7x - 5x = 3 - 9

2x = -6

x = -6/2

x = -3

proof:

7x +9 = 5x +3

7(-3) +9 = 5(-3) +3

-12 = -12  ---- ok