Algebra: exponents
posted by Amy .
(b^(4y+7))(b^y) / b
I got 1 / b^(3y8)
but the answer is supposed to be 1 / b^(3y+6) ?
could someone write the steps to solving this?

I just solved it and i know how to get 1 / b^(3y+6) as the answer
but, if for the exponent 4y+7 if it isn't (4y+7) I wouldn't move it to the bottom of a fraction? 
by answer I meant b^3y+6

You may put the exponents in the numerator or denominator.
a^{3}= 1/a^{3}
sometimes teachers have beginning students move them around just for practice.