Step-by-step explanation:
[tex] = 1 \frac{1}{5} + \frac{3}{4} - ( - 3 \frac{3}{5} ) - ( - 2 \frac{1}{4} )[/tex]
[tex] = 1 \frac{1}{5} + \frac{3}{4} + 3 \frac{3}{5} + 2 \frac{1}{4} [/tex]
[tex] = (1 + 3 + 2) + ( \frac{1}{5} + \frac{3}{4} + \frac{3}{5} + \frac{1}{4} )[/tex]
[tex] = 6 + ( \frac{4 + 15 + 12 + 5}{20} )[/tex]
[tex] = 6 + \frac{36}{20} [/tex]
[tex] = 1 + 6 + \frac{16}{20} [/tex]
[tex] = 7 + \frac{4}{5} [/tex]
[tex] = 7 \frac{4}{5} [/tex]
