√70以上 x-y=2 3x 2y=16 157205-X 2 y 2 169 3x 2y 39
Answer (1 of 2) System Row1 x2y3z=1 Row2 4xyz=4 Row3 2x3yz=6 There is "z" in Row2 and "z" in Row3, so let's add those Row2 Row3 4xyz 2x3yz = 46 → 6x 2y = 10 This can be simplifed, dividing by 2 on both sides 3x y = 10 There is "