hasil dari 2X+4Y=14 3X-Y=7

2x + 4y = 14 ---(1)
3x - y = 7 ---(2)
[Jawab]
(2) × 4 = 12x - 4y = 28 ---(2)'
(1) + (2)' = 14x = 42
= x = 3
Masukan ke (2)
(3×3) - y = 7
9 - y = 7
- y = 7 - 9
- y = - 2
y = 2
Jadi,(x,y) = (3,2)
MAAF KALO SALAH

(2X+4Y=14) (3X-Y=7)=

(2X+3X)+(4Y-Y)+(14+7)=
5X-3Y+21