11. Solve the following matrix equation for X e Ma(R), 12. Use Cramer's rule to solve the following linear systems + 2y -2=0 a.) ( 2x - y + 3z = 0 ; (-2,2,2) aty+z =2 1 -1+z =3 b.) 2x +y -32 =10 (no solutions) I + 5y - 92 = 8 20 -1-2-1=-1 c - 2y + w + 2 = -2 C.) rty - 23 +w = 4 (-2, -1, -3, 1) cty+z -2w. -8 12. Solve the following linear systems in terms of the parameter a. b. cER as Fy += = 1 a.) r + ay + = = a r ty taz = a b. ) r+ (1la)y+= = 1 cty+ (1+ b)= = 1