Question

5x- 4y=2
2x+3y=17/4
Metodo de sustitucion porfa

Answer 1

5x - 4y = 2 ... (1)
2x + 3y = 17/4 ...(2)

Pasamos a multiplicar x3 y x4 para que se vayan las Y:

3(5x - 4y = 2) = (15x - 12y = 6)
4(2x + 3y = 17/4) = (8x + 12y = 17)

15x - 12y = 6
8x + 12y = 17
23x = 23
x = 23/23 = 1

Reemplazando
5(1) - 4y = 2
5 - 4y = 2
5 - 2 = 4y
3 = 4y
y = 3/4

Los valores son x=1 , y= 3/4