The difference (subtraction) of 6 times a number (x represents number) and 7. This gives us 6x-7. That is equal to five times (multiplication) the sum (addition) of the number, x, and 4. This gives you = 5(x+4) and combined gives us B, 6x-7=5(x+4).
They give you the same answer it just that one has parenthesis and the other one doesn't.
Additive Inverse. -5 and 5 are opposites.
The answer is 30.
Hope this helped :)
alisa202
