-2x+3y=4 X+y=5 Tentukan himpunan penyelesaian nya

-2x+3y=4
X+y=5 |×2

-2x+3y=4
2x+2y=10
---------------- +
5y=14
y=2.8

x+2.8=5
x=2.2

-2x+3y=4 ---(1)
X + y =5 ---(2)
[Jawab]
(2) × 2 = 2x + 2y = 10 ---(2)'
(1) + (2)' = 5y = 14 = y = 14/5
Masukan ke (2)
x + 14/5 = 5
x = 4 5/5 - 2 4/5
x = 2 1/5 = 11/5
Jadi, (x,y) = (11/5,14/5)
MAAF KALO SALAH