(7целых 7/8 - 3целых 1/2) х 1 + 1/4 : 3/5

[tex](7 \frac{7}{8} - 3 \frac{1}{2} ) \times 1 + \frac{1}{4} \div \frac{3}{5} = \\ ( \frac{63}{8} - \frac{7}{2} ) + \frac{1}{4} \times \frac{5}{3} = \\ ( \frac{63}{8} - \frac{28}{8} ) + \frac{5}{12} = \\ \frac{35}{8} + \frac{5}{12} = \\ \frac{105}{24} + \frac{10}{24} = \frac{115}{24} [/tex]

(7 7/8 - 3 1/2) х 1 + 1/4 : 3/5= 4 целых 19/24
1) 7 7/8 - 3 1/2=63/8-7/2=63/8-28/8=35/8
2)35/8*1=35/8
3)1/4:3/5=5/12
4)35/8+5/12=105/24+10/24=115/24=4 целых 19/24