What is the sum?

2x+4/x+1 -x+5/x+1

What is the standard form of -5x^2+2x^4-11+x^3+3x

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

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)