Hp dari sistem persamaan 2x-5y=31 7x+3y=6

2x-5y=31………(x7)
7x+3y=6………(x2)

14x - 35y = 217
14x + 6y = 12
----------------------- -
-41y = 205
y = 205/-41
y = -5,24

7x + 3y = 6
7x + 3(-5,24) = 6
7x - 15,73 = 6
7x = 6 + 16
x = 22/7
x = 3,14

HP :{x = 3,14 dan y = -5,24}