Please can someone explain how to do these? I know how to work them out when they involve less than or equal to signs but not the other way round.

Brownian motion has variance parameter 16 where the brownian motion is B(t), t>=0. Evaluate

P(B(7.5)>-6 | B(2)=2)

P(|B(2)|>6 | B(7.5)=2)

Thank you