Question

Solve the following systems of equations express your answer as an ordered pair in the format (a,b) With no spaces between the numbers or symbols

2x+7y=-7
-4x-3y=19

Answer 1

Answer: 5/11,5

Explanation:

Multiply equation one by -4

Multiply equation two by 2

Then, it becomes

-8x - 28y = 28

-8x - 6y = 38

Subtract equation two from equation one .

It becomes -22y = -10

Divide both sides by 22, you have y= 5/11

NOW substitute y=5/11 into equation two to get X.

-4x -3(5/11) =19

-4x = 19 + 15/11

-4x = 20

Divide both sides by -4

X = -5