Answer:
-8 
Step-by-step explanation:
÷
=
x 12
=
= -8 
Answer:
10
Step-by-step explanation:
Answer:4.5 hope this helps
Step-by-step explanation:
Let's say x = 16. In the equation 4 + x(3/x) then you use 16 instead of x. So it would look like 4 + 16(16/3). 4 plus 16 times 16 divided by 3.
–(x^2–2x+12) would become –x^2+2x–12.
3x^2+9x+13 – x^2+2x–12
= 2x^2 + 11x – 1