5x + 7y = 13 2x - y = 9 dengan cara metode eliminasi

5x+7y=13 |x2
2x-y=9 |x5

10x+14y=26
10x-5y=45
19y = -19
y = -1

2x-y=9
2X-(-1)=9
2x= 8
x=4

5x + 7y = 13
2x - y = 9 |x 7|

5x + 7y = 13
14x - 7y = 63
------------------ +
19x = 76
x = 4

5x + 7y = 13 |x 2|
2x - y = 9 |x 5|

10x + 14y = 26
10x - 5y = 45
-------------------- -
19y = -19
y = -1

HP : { 4 , -1 }