PLISS BANTUIN NO 2 YA KAKK ,DENGAN CARANYA ,,DIKUMPULIN BESOK
annisanh1
A. 5x +2y =-4 I x 2 = 10 x + 4y = -8......i 2x + 4y = 8 I x 1 = 2 x + 4y = 8.......ii kurangi pers i dan ii 8x = -16 x =-2 masukkan x ke pers. i ===> 5 (-2) +2y = -4 = -10 +2y = - 4 = 2y = 6 y=3 HP {-2,3} b. 3x+3y =5 I x 1 ==> 3x+3y =5 ......i 2x+y= 2 I x 3 ==> 6x+3y= 6 .....ii kurangi pers i dan ii -3x = -1 x =1/3 masukkan x ke pers. i ===> 3(1/3)+3y =5 =1+ 3y = 5 = 3y = 4 y=4/3 HP {1/3, 4/3}
2x + 4y = 8 I x 1 = 2 x + 4y = 8.......ii
kurangi pers i dan ii
8x = -16
x =-2
masukkan x ke pers. i ===> 5 (-2) +2y = -4
= -10 +2y = - 4
= 2y = 6
y=3
HP {-2,3}
b. 3x+3y =5 I x 1 ==> 3x+3y =5 ......i
2x+y= 2 I x 3 ==> 6x+3y= 6 .....ii
kurangi pers i dan ii
-3x = -1
x =1/3
masukkan x ke pers. i ===> 3(1/3)+3y =5
=1+ 3y = 5
= 3y = 4
y=4/3
HP {1/3, 4/3}