Question

help me please

Answer 1

@LynFran

Answer 2

All you've to know is:
\[\huge\begin{vmatrix}
a&b\\
c&d
\end{vmatrix}=ad-cb\]

Answer 3

yeah how does that help me i suck with things that have fractions

Answer 4

@LynFran

Answer 5

Can you just plugging values to that?

Answer 6

i wish

Answer 7

1/6*10/7- ((-6/5)*1/8)