Question

14. Find the values of a and b for which the system of equations
x + y + z = 3,
x + 2 y + 2 z = 6,
x + a y + 3 z= b
have
(i) no solution;
(ii) unique solution; and
(iii) more than one solution.
15.

Answer 1

no solution ok this will help you because equations must contain only one variable

Answer 2

x=1

y=1

z=1

it easy you can do it