Question

( 2 целых 6/7-1 целая 1/2) * 5 целых 1/4

Answer 1

$(2frac{6}{7}-1frac{1}{2})*5frac{1}{4}=(2frac{12}{14}-1frac{7}{14})*frac{21}{4}= 1frac{5}{14}*frac{21}{4}=frac{19*21}{14*4}=7frac{1}{8}$