Question

(6 7/9-2 2/3)-(2 2/3-1 7/15)
Решите пожалуйста!

Answer 1

$(6frac{7}{9}-2frac{2}{3}) -(2frac{2}{3}-1frac{7}{15}) \ 6frac{7}{9}-2frac{2}{3} = frac{61}{9} - frac{8}{3} = frac{61-21}{9} = frac{40}{9} \ 2frac{2}{3}-1frac{7}{15} = frac{8}{3} - frac{22}{15} = frac{40-22}{15} = frac{18}{15} \ frac{40}{9} - frac{18}{15} = frac{600-162}{135} = frac{438}{135} = 3frac{33}{135}$