Question

20×d+a?20÷d+a
d×a+6?d×a-6
12÷6+a?12×(6+a)

Answer 1

$20 times d + a > 20 div d + a$
$d times a + 6 > d times a - 6$
$12 div 6 + a < 12 times (6 + a)$