Please help me with these please i give brainliest.

Find two rational expressions that have the difference of 2-n/n-4

What is the prime factorization of 230

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)