Question

(18 7/12+3 1/5)-7 5/12.Спасибо заранее

Answer 1

$18 frac{7}{12} + 3 frac{1}{5} - 7 frac{5}{12} = frac{18 times 12 + 7}{12} + frac{3 times 5 + 1}{5} - frac{ 7times 12 + 5}{12} = frac{223}{12} + frac{16}{5} - frac{89}{12} = frac{134}{12} + frac{16}{5} = frac{134 times 5 + 16 times 12}{60} = frac{670 + 192}{60} = frac{862}{60} = frac{431}{30} = 14.4$

Answer 2

спасибо!!!

Answer 3

15цэлых 7/12      +6.2     -6цэлых 3/12＝9цэлых 19/30