Question

найдите значение выражений (18целых1/4-17целых5/6)*8,4+6,5

Answer 1

Решение внизу на фото

Answer 2

$(18 frac{1}{4} - 17 frac{5}{6} ) times 8.4 + 6.5 = \ = (1 + frac{1}{4} - frac{5}{6} )times 8.4 + 6.5 = \ = (1 + frac{3 - 10}{12}) times 8.4 + 6.5 = \ = frac{5}{12} times 8.4 + 6.5 = \ = 5 times frac{8.4}{12} + 6.5 = \ = 5 times 0.7 + 6.5 = 3.5 + 6.5 = 10$