Practice problem
What is 12+13+17\frac{1}{2}+\frac{1}{3}+\frac{1}{7}21+31+71
1314\frac{13}{14}1413
2021\frac{20}{21}2120
4142\frac{41}{42}4241
111
Type a concept, like “slope” or “photosynthesis”.
