Question

1/3x -2/3y=-4 dan 1/2x+1/5y=6

Answer 1

1/3x - 2/3y = - 4 ==> dikali 3
1/2x + 1/5y = 6 ==> dikali 10
hasil keduanya:
x - 2y = - 12
5x + 2y = 60
__________ +
6x = 48
x = 8

x - 2y = - 12
8 - 2y = - 12
-2y = - 12 - 8
- 2y = -20
y = -20/-2
y = 10
Himpunan Penyelesaian = { 8 , 10 }