To solve the equations: 3x + 2y-z = 3x-y-z = - 4x + y + Z = 8, the method of addition, subtraction and elimination is used Quick answer, good Bonus seems to be the second semester of sixth grade in class practice

To solve the equations: 3x + 2y-z = 3x-y-z = - 4x + y + Z = 8, the method of addition, subtraction and elimination is used Quick answer, good Bonus seems to be the second semester of sixth grade in class practice

Formula 1.3x + 2y-z = 3
Formula 2. X-Y-Z = - 4
Formula 3. X + y + Z = 8
Formula 2 + formula 3: 2x = 4, so x = 2
Formula 1 - Formula 2: 2x + 3Y = 7, so y = 1
X = 2, y = 1, z = 5