Respuesta :

Answer:

6x+48+15+3x and 9x+63

Step-by-step explanation:

3(2x+16)=6x+48 and 3(5+x)=15+3x. 6x+48+15+3x=9x+63 .

Answer:

9x +63

Step-by-step explanation:

multiple each 3 times what is inside each parentheses then collect like terms