When megan solved this system using the elimination method , she added the equations together and got the equation 4y = 16. then she solved that equatio n and got y = 4. then she substituted 4 in the first equation for y and solved for x. she got x = 4. the point (4, 4) is not the correct solution. state in a complete sentence where she made her first mistake. what is the correct solution to the system ? show your work in the space provided. 2x + 3y = 20 - 2x + y = 4

Megan added the equations together but  she subtract 4 instead of addition of 4. The correct solution is (1,6).

Step-by-step explanation:

The given equations are

       ...(1)

           .... (2)

Add both equations to eliminate x.

Megan make a mistake in this step. She added the equations together but she subtract 4 instead of addition of 4.

Divide both sides by 4.

Put this value in equation (1).

Divide both sides by 2.

Therefore the correct solution is (1,6).

answer: a and b

step-by-step explanation: