Diketahui 4x-y=11 2x+3y=9 Tentukan nilai; X dan y 2x-3y=

4x-y=11
4x+6y=18
dikurangi
-7y= -7
y = 1

4x-1=11
4x=12
x=3

2x-3y=
2.3-3.1 = 6-3 =3

x = 3 dan y= 1

• 4x-y = 11
4(3)-1 = 11
12-1 = 11

• 2x+3y = 9
2(3) + 3(1) = 9
6 + 3 = 9

maka :

2x-3y =...
2(3) - 3(1) =...
6 - 3 = 3