Respuesta :
Answer:
5x+2y
x=5
y=-2
then putting value of x and y in the equation
we get,
5*5+2*(-2)
=25-4
=21
21, you would substitute the x with the 5 and the y with the -2 which would look like
5 x 5 + 2 x -2
5 x 5 + 2 x -2