4-7/12+1 5/6+2 1/3-1 1/4

Задание: Решить пример с дробями по действиям.
4 - $\frac{7}{12}$ + $1 \frac{5}{6}$ + $2\frac{1}{3} - 1 \frac{1}{4}$ = $6 \frac{1}{3}$
1) 4 - $\frac{7}{12}$ = $\frac{48}{12} - \frac{7}{12} = \frac{41}{12}$
2) $\frac{41}{12} + 1 \frac{5}{6} = \frac{41}{12} + \frac{11}{6} = \frac{41}{12} + \frac{22}{12} = \frac{63}{12}$
3) $\frac{63}{12} + 2 \frac{1}{3} = \frac{63}{12} + \frac{7}{3} = \frac{63}{12} + \frac{28}{12} = \frac{91}{12}$
4) $\frac{91}{12} - 1\frac{1}{4} = \frac{91}{12} - \frac{5}{4} = \frac{91}{12} - \frac{15}{12} = \frac{76}{12} = \frac{19}{3} = 6\frac{1}{3}$