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4x + 1/9 y = 17 kalikan 9
3x - 4y = -24 kalikan 12
36x + y = 153 kalikan 1
36x - 48y = -288
36x + y = 153
-49 y = - 441
y = 9
36x + y = 153
36x + 9 = 153
36x = 144
x = 4
3x - 2y = 3.4 - 2.9 = 12 - 18 = -6 (a)
------------------- X 6
3x - 4y = -24 ----->persamaan setelah di sederhanakan
4x + 1/9 y=17
--------------------X9
36x+y=153
y=153-36x
3x -4y =-24
3x-4(153-36x)=-24
3x-612+144x =-24
147x=-24+612
147x=588
x=588/147
x=4
3(4) - 4y=-24
12-4y=-24
-4y=-24-12
-4y=-36
y=-36/-4
y=9
3x-2y=
3(4) -2(9)=
12-18=-6