What is 28/42 in simplest form

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

In the diagram, gef and hef are congruent. what is the value of x