Question

(1/8+3/4)*16
(12 1/2:2 1/2)-6
2:2/3*1 1/2
3/4*5/7+3/4*2/7

Answer 1

$( frac{1}{8} + frac{3}{4} ) times 16 = ( frac{3 + 6}{24} ) times 16 = frac{9 times 16}{24} = 6$
$(12 frac{1}{2} div 2 frac{1}{2} ) - 6 = 12.5 div 2.5 - 6 = 5 - 6 = - 1$
$2 div frac{2}{3} times 1 frac{1}{2} = frac{2 times 3}{2} times frac{3}{2} = frac{9}{2} = 4.5$
$frac{3}{4} times frac{5}{7} + frac{3}{4} times frac{2}{7} = frac{15}{28} + frac{6}{28} = frac{21}{28} = frac{3}{4} = 0.75$