Solve the system of equations for the variables: x+2y-z=3
x+y-2z= -1
(Hopefully it wasn't too hard. Trying to give points without my question being illogical.)

Solution: beginning of the unit = - 2end of the unit = beginning of the unit + 4end of the unit = - 2 + 4end of the unit = 2final answer: therefore, aila was able to reach 2 ( insert name of unit of measurement ) at the end of the unit.hope this ! : )have a lovely day! < 3