Question

resolver por método de igualación -5x + 3y + 9 = 0 - 2x - 7y + 20 = 0​

Answer 1

Respuesta:

-5x + 3y + 9 = 0

- 2x - 7y + 20 = 0

5×=3y+9

2×= -7y+20

×=3y+9/5

×= -7y+20/2

3y+9/5= -7y+20/2

6y +18/10= -35y +100/10

6y+18= -35y+100

41y=82

y=2

-5x + 3 •(2) + 9 = 0

-5×+6+9=0

5x=15

x=3