Practice problem
Which of the following is a decomposition of 412+912?\frac{4}{12}+\frac{9}{12}?124+129?
1312\frac{13}{12}1213
85+519\frac{8}{5}+\frac{5}{19}58+195
1+1121+\frac{1}{12}1+121
12+11212+\frac{1}{12}12+121
Type a concept, like “slope” or “photosynthesis”.
