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x+3y =110 | dikali 1
= 12x + 3y =297} dikurang
x. + 3y = 110 }
= 11x = 187
x =17
b) 5x-2y =17. | dikali 2
2x +3y =3 [ dikali 5
= 10x -4y =34}dikurang
10x + 15y = 15 }
= -19y = 19
y= -1