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Answers; 1.x+y=4 x-y=16 Minus eq 1 frm 2 -2y=12. y=6 Substitute y=6 in eq 1 x=-2. 2. Minus eq 2 frm 1 6y=12 y=2.Substitute y=2 in eq 1 x=-3 3.Minus eq 2 frm 1 -9y=18 y=18/-9 y=-2 Substitute y=-2 in eq 1 x=-3 4..add eq 1 and 2 no answer 5.minus eq 2 frm 1 2y=-6 y=-3.Substitute y=-3 in d...

Answers; 1.x+y=4 x-y=16 Minus eq 1 frm 2 -2y=12. y=6 Substitute y=6 in eq 1 x=-2. 2. Minus eq 2 frm 1 6y=12 y=2.Substitute y=2 in eq 1 x=-3 3.Minus eq 2 frm 1 -9y=18 y=18/-9 y=-2 Substitute y=-2 in eq 1 x=-3 4..add eq 1 and 2 no answer 5.minus eq 2 frm 1 2y=-6 y=-3.Substitute y=-3 in d...