Question

вычислите а) 7 3/3 + 4 6/9 б)15 5/11 + 17 8/11 в) 9 - 3/4 г)18 3/7 - 5 6/7

Answer 1

$frac{9}{1} - frac{3}{4} = frac{36}{4} - frac{3}{4} = frac{33}{4} = 8 frac{1}{4}$$7 frac{3}{3} + 4 frac{6}{9} = frac{24}{3} + frac{42}{9} = frac{72}{9} + frac{42}{9} = frac{114}{9} = 12 frac{2}{3}$
$15 frac{5}{11} + 17 frac{8}{11} = 32frac{13}{11} = 33frac{2}{11}$
$frac{9}{1} - frac{3}{4} = frac{36}{4} - frac{3}{4} = frac{33}{4} = 8 frac{1}{4}$
$18 frac{3}{7} - 5 frac{6}{7} = 17 frac{10}{7} - 5 frac{6}{7} = 12 frac{4}{7}$