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-2y = 9-5x
4y = -18 + 10x
2x+4y=-2
2x+(-18+10x)=2
12x-18=2
12× = 20
× = 20/12
y= (9-5x)/-2
= (9-(100/12))/-2
= (8/12)/-2
= -4/12
4X+3y = 4.20/12 + 3.(-4/12)
= 20/3 + (-1)
= 17/3
sorry klo salah