What is (2n-9)-(2.4n+4)

Student B  has steps in correct order.

Student A has steps in the incorrect order

Step-by-step explanation:

Lets revise the steps of construct a line parallel to a given line from a given point.

- From the figure:

- Given Line AB and point C ∉ to line AB

Steps:

- Draw line BC

- Put the pin on the compass at point B and draw an arc intersects AB and BC at  points D,E

- Without changing the distance of the compass put the pin of the compass at point C and draw an arc intersects BC at point F

- Measure the distance between points D and E by the compass and place the pin of the compass at point F and draw an arc with the same distance of DE to cut the arc created from line BC at point C and label the point of intersection of the two arcs by G

- Join the points C and G by l line which is parallel to line AB

Hope this helps! Have a blessed day!