Given the equations 2x − y + Z = 55x + 8y − z = 9, then the value of X + y is () A. 14B. 2C. -14D. -2

Given the equations 2x − y + Z = 55x + 8y − z = 9, then the value of X + y is () A. 14B. 2C. -14D. -2

2x − y + Z = 55x + 8y − z = 9, (1) + (2) is 7x + 7Y = 14, x + y = 2