Question

resolva
2x-3y =8
6y-4x=9

Answer 1

a) 2 . (0 + y - 1) + y - 1 = 0
2y - 2 + y - 1 = 0
2y + y = 0 + 1 + 2
3y = 3
y = 3/3
y = 1
x = 0 + 1 - 1
x = 0