Please answer it in two minutes

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)