Question

-1/8+9/10 answered in lowest trems

Answer 1

To anwer this question we need to remember that:

$\frac{a}{b}+\frac{c}{d}=\frac{ad+bc}{bd}$

With this in mind, let's make the operation:

$-\frac{1}{8}+\frac{9}{10}=\frac{-10+72}{80}=\frac{62}{80}=\frac{31}{40}$

Therefore the answer is 31/40