It's easy to add and subtract fractions when the numbers on the bottom ... {2} \) we need to multiply the numerator and denominator by 3. \( \frac{1}{2} \) = \( \frac{3}{6} ...

Adding and subtracting fractions ... means we can make the denominator to both fractions in our original sum 18. So for 7/9, we got to 18 by multiplying both numerator, seven, and our denominator ...