Equation A:
6 + 3x = 3x - 3
This equation has no solution, no matter what number you plug into the equation, it will never = each other
[if you tried simplifying more]
9 + 3x = 3x (added 3 on both sides, then subtracted 3x on both sides)
9 = 0
Equation B:
2(4x - 1) = 8x - 2 Distribute/multiply 2 into (4x - 1)
(2)4x - (2)1 = 8x - 2
8x - 2 = 8x - 2
This will have an infinite number of solutions because whatever number you plugged in, they would always = each other since they are the same on both sides of the equation
[simplified]
8x = 8x (add 2 on both sides, then divide 8 on both sides)
x = x
Your answer is A