Question

What is -5/8 divided by 9/10?

A: -25/36
B:-9/16
C: -45/80
D: -1/36

Answer 1

`-(5)/(8):(9)/(10)=-(5)/(8)\cdot(10)/(9)=-(5\cdot\\ot10_5)/(\\ot8^4\cdot9)=-(5\cdot5)/(4\cdot9)=\boxed{-(25)/(36)}\leftarrow \boxed{\boxed{A}}`