Respuesta :

So here we just are gonna distribute and simplify.
Ver imagen zmissile

Answer:

16x - 15

Step-by-step explanation:

Basically, you distribute 3 into 7x, and into 5, which would leave you with a new equation of -5x + 21x -15. Then from there you'd combine like terms, which is just 21x - 5x, to get 16x - 15 as your final answer .