Question 945508
x + y + z = 27
x + y = z + 83
z = x - 60


Substitute z into the first two equations.


2x + y = 87
x + y = x - 60 + 83 ----> y = 23


2x + 23 = 87
x = (87-23)/2 = 32


z = 32 - 60 = -28


solution: (x, y, z) = (32, 23, -28)