Question

21/4÷7/3-14/3+16/3×7/2

Answer 1

21/4÷7/3-14/3+16/3×7/2
= 21/4 ×3/7-14/3+112/6
=63/28-14/3+112/6
=63/28-28/6+112/6
=63/28-140/6
=((63×6)-(140×28))/28×6 ( by cross multiply)
=(378-3920)/168
= -3542/168
= 1771/84 ans.
or
21.083 ans.