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2x-5y=16}X=(16+5y)/2 --> 2x-5*(-4)=16;2x+20=16;X=(16-20)/2;X=-4/2; X=-2
2*(-22-3y)=5*(16+5y)
-44-6y=80+25y
-44-80=25y+6y
-124=31y
-124/31=y
-4=y