System of 3 Linear Equations Ⅹ1+X2+X3=2-(1) 2X1+3X2+X3=3---(2) X1-X2-2x3=-6 (3)17 x1 + x2 + x3 = 2 --------(1) 2x1 + 3x2 + x3 = 3 ------(2) x1 - x2 - 2x3 = -6 --------(3) (1) (2) (3) System of 3 Linear Equations