im not sure but it could possibly be A because x(5+x)=8 would come out to xx=3 which could mean that each x is equal to 1.5.
B comes out to xx=2 which could be x=1.
C comes out to xx=-16 which could mean that x equals -8.
D simplified is 3x-2=7 and comes out to 3x=9 which means x could equal 3.
