1). On the second equation I subtracted 10y from both sides. So I get: -20y-7x=-14 -10y+2x=4 I then multiplied the 2nd equation by -2 -20y-7x=-14 20y-4x=-8 You combine like terms -11x=-22 Divide both terms by -11 x=2 Then plug in x -20y-7(2)=-14 -20y-14=-14 Add 14 on both sides -20y=0 Divide both sides by -20 y=0 So in conclusion: x=2 y=0
2). Add 7y in both equations so I get: 10x+7y=3 10x+7y=-3 So I multiply -1 on the top side. -10x-7y=-3 10x+7y=3 Add like terms 0=0 No solution is the answer.
