We start from the third equation:
4z = 16 divide both sides by 4
z = 4
Put the value of z to the second equation:
y + 4 = 5 subtract 4 from both sides
y = 1
Put the values of y and z to the first equation:
3x + 2(1) - 4 = 4
3x + 2 - 4 = 4
3x - 2 = 4 add 2 to both sides
3x = 6 divide both sides by 3
x = 2
Answer: x = 2, y = 1, z = 4 → (2, 1, 4)