Question

Tentukan penyelesaian nya yah!!

Answer 1

4x +2 y = 5
4x + 6y = 15
.......( - )........
4y = 10 --> y = 10/4 = 5/2
4x + 2y = 5 --> 4x + 2(5/2) = 5
4x = 0
x = 0
HP (0, 5/2)

2)
1/3x - 1/2 y = 7/6 --> 2x - 3y = 7
1/2 x + 1/4 y = - 5/4 --> 2x + y = - 5
kurangkan ----> - 4y = 12
y = - 3 dan  2x = 7 + 3y
2x = 7-9
x = -1
HP(x,y)= (-1, -3)

Answer 2

1. 4x + 2y = 5 --> 12x + 6y = 15
    2x + 3y = 15/2 --> 4x + 6y = 15

   4x + 2y = 5
    4x + 6y = 15 -
           -4y = -10 
            y   = 10/4 = 2,5 = 2 1/2
   
    12x + 6y = 15
    4x + 6y = 15 - 
    8x         = 0
     x          = 0