Combine like terms. 5/6x - 2/3x a. 1/6x b. 1/3x c. 1/2x d. x

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

Can someone pls ! pls answer all. no explanation needed..

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class