SOLUTION: I should have said that one side is 5x+y and the opposite side is 7, the other part of the problem is that the side is 3x-4y and it's opposite side is 18. I know that x=2 and y=-3

Algebra ->  Parallelograms -> SOLUTION: I should have said that one side is 5x+y and the opposite side is 7, the other part of the problem is that the side is 3x-4y and it's opposite side is 18. I know that x=2 and y=-3      Log On


   



Question 281318: I should have said that one side is 5x+y and the opposite side is 7, the other part of the problem is that the side is 3x-4y and it's opposite side is 18. I know that x=2 and y=-3 but I need to know how to show my daughter how to get the answer.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Opposite sides are equal.
5x+y=7
3x-4y=18
solve by substitution or elimination
x=2 y=-3