how do you add fractions with different bottom numbers?
['The bottom numbers (the denominators) are already the same. Go straight to step 2.', 'Add the top numbers and put the answer over the same denominator:', 'Simplify the fraction:', 'Step 1: The bottom numbers are different. ... ', 'Step 2: Add the top numbers and put them over the same denominator:', 'Step 3: Simplify the fraction:']