Question

12-x-y
если
х= 5 целых 3/4
y= 7/12

Answer 1

$12-x-y = 12-5 frac{3}{4}- frac{7}{12}= 12- frac{23}{4}- frac{7}{12} = frac{144}{12}- frac{69}{12}- frac{7}{12} = frac{68}{12}=5 frac{2}{3}$