Answer:
someone has type A blood 40%
Step-by-step explanation:
The probability that a certain person has the A-type blood is 40%, or 0.4
there is no solution:
6-2(3-2x) = -4(3-x)
6-6+4x= -12+4x
4x= -12+4x
0=-12
around 4.1
Answer: x=-1
