10. This is because 3 evenly goes into 30 without a remaining fraction
The equation given in the question is
<span>A = a+b+c / 3
3A = a + b + c
3A - a - c = b
From the above deduction, it can be easily concluded that the correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your desired help.</span>
The answer is going to be
x= 2,0
y= 0, -6
