jawab dengan menggunakan cara

jawab


3/4   x     - 1/2  y = 4 ....kalikan 4
3x - 2y = 16

x + 5/2 y = - 1 .....kali 2
2x + 5y = - 2


3x  - 2y = 16.....kali 2
2x + 5y = - 2 ....kali 3

6x - 4y = 32
6x + 15y = - 6 ......(-)
-19y = 38
y  = - 2

2x + 5y = - 2
2x + 5(-2) = - 2
2x - 10 = - 2
2x= 8
x = 4

5x+ 3y= 5(4) + 3(-2) = 20 - 6
5x + 3y = 14