What is 3/4+11/12= I can't figure this out

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

What is the solution to the division problem below x3+x2-11x+4/x+4

Find solution of the linear equation y = 2/3x + 1/3