How do you solve this system of equations: #6x + y = 7, y + z = 2 , and 4x - z = 4#?
Substituting the value of z in terms of x in Eqn (2),
Subtracting Eqn (4) from (1),
Substituting value of x in Eqn (3),
Substituting value of z in Eqn (2),