a) if larger number is four more than smaller
and smaller number is y, then larger number is y+4=x, so y=(x-4), so( x-4) was a correct answer
if larger is x, then smaller is (x-4),
b)if larger x, then smaller x/2
c) y +(x-4), or just y+x-4
exceeds y by ---- means "+ "
4 less than x means (x-4)
so y +(x-4), or just y+x-4 is also correct