Question

Which is the correct answer when you add 3x - y + z , 2y - 5z and 3z - 4x​

Answer 1

Answer:

$(3x - y + z) + (2y - 5z) + (3z - 4x) \\ = 3x - 4x - y + 2y + z - 5z+ 3z \\ = - x + y - z$