Latest Exam Aptitude Question SOLUTION: Solve for X,Y,and Z in the following systems of threme equations: A) X+2Y+Z =6 X+Y=4 3X+Y+Z=8 B) 10X+Y+Z=12 8X+2Y+Z=11 20X-10Y-2Z=8 C) 22X+5Y+7Z=12