We need to get a common denominator in the numerator portion. So we're going to have A to the highest exponent, so a ^2. So the first term is going to get multiplied top and bottom by an A. So we get two a / a ^2 -, 3 / a ^2. So if we combine that, we get two a -, 3 / a ^2. Looking at the bottom, we want A to the highest exponent, so a cubed. So we have 2 / a ^3 plus seven a ^2 / a ^3 because we had to multiply the top and the bottom by a ^2, so we get 2 plus seven a ^2 / a ^3. We're going to leave the numerator alone, two a - 3 / a ^2 and we're going to take the reciprocal of the denominator. So times a ^3 / 2 + 7 A squared, the two a - 3 have nothing in common other than A1, and the 2 + 7 A squared have nothing in common other than A1. So now it's all a monomial, and the only thing we can do is we can reduce the a cubed over the a ^2. If I have a ^3 / a ^2, it's a single A on top being multiplied by that two a -, 3 / 2 + 7 A squared.