Step-by-step explanation:
3x+7y-12=0
3x+7y=12
3x=12-7y
x=12-7y/3
It could 20 divided by 4 and add 6.
i hope this helps.
Answer:
Step-by-step explanation:

Neurologists are specialists who treat diseases of the brain and spinal cord, peripheral nerves and muscles. Neurological conditions include epilepsy, stroke, multiple sclerosis (MS) and Parkinson's disease.
8+12+4= 24
This is the total amount of marbles. You’ll divide the green marbles by the total amount since you want the probability of green marbles.
4/24= .16 or 16% possibikity