Ana are 25 euro in monede de 2 euro si bacnote de 5 euro. cate monede are ana, daca in total are 8 bacnote si bacnote?

x = numărul de monede de 2 euro

y = număr de bancnote de 5 euro

2x + 5y = 25

x + y = 8

y = 8 - x

2x + 5(8 - x) = 25

2x + 40 - 5x = 25

-3x = -15

x = 5

x + y = 8

5 + y = 8

y = 3

numărul de monede de 2 euro = 5

număr de bancnote de 5 euro = 3

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

thats not a system of equations, that is a solution