PROBLEM SOLVING - tempat bertanya PR Kaskuser (SD, SMP, SMA) - Part 3
-x + 3y + 5z = 0 2x - 2y - 6z = 0 x + y – z = 0 -x + 3y + 5z = x + y - z 2x = 2y + 6z x = y + 3z ... (4) masukkan ke pers 3 (y + 3z) + y -z = 0 2y = -2z y = -z ... (5) masukkan ke pers 2 2(y + 3z) - (-z) - z = 0 2y + 6z = 0 2y = -6z masukkan y = -z 2 (-z) = -6z -2z = -6z z = 3 masukkan pers...