Mary has 3/8 of a medium pizza left .héctor has 2/8 of another médium pizza left . how much pizza do they have altogether

The answer is:

Let's make an equation to calculate how much pizza do they have altogether.

Let Mary be "x" and Héctor be "y".

So, since we need to calculate how much pizza do they have, let's write the following equation:

Where,

Then, substituting into the equation, we have:

Now, since both fractions have the same denominator (8), we can add the numerators, so:

Hence,

Mary and Héctor have of a medium altogether.

Have a nice day!

no this is a nonlinear negative