## mpj4 one year ago algebra: how to add algebraic factions?

1. mpj4

$\frac{2}{15u^9}-\frac{1}{40u^8}$

2. mpj4

funny how I'm doing calculus and got stumped at this point in the calculation process.

3. mpj4

ah I figured it out.$\frac{2}{5\cdot 3\cdot u^9} - \frac{1}{5\cdot 8\cdot u^8}$ sarreh, closing this.