Respuesta :

blackb3rry

Answer:

1140

Step-by-step explanation:

3x(x + 2) - 3x

x = 19

3 * 19( 19 + 2) - 3 * 19

3 * 19(21) - 3 * 19

3 * 19 = 57

57(21) - 3 * 19

57 * 21 = 1197

1197 - 57

1140

Hope this helped!