I need help pls I’m taking a test and I don’t know what to do.

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.