3:1 ratio meaning for every 3 brown eyed people there are 1 blue eyed. So if you have 12 brown every you have 4 blue eyed. Giving you a total of 16 people.
4x+12=16
4x=4
x=1
or
-(4x+12)=16
-4x-12=16
-4x=28
x=-7
answer Choice C is correct
Answer:
x= -4
Explanation
Move constant to the right-hand side and change its sign
8x=5-37
Calculate the difference
8x=-32
Divide both sides of the equation by 8
x= -4
150-40=110
110/2= 55.
Each pair of shoe costs $55