Question

Solve the following system of equations.

2x + 3y – z = 1
3x + y + 2z = 12
x + 2y – 3z = –5


a.(3, 1, 2)

b.(–3, 1, 2)

c.(3, –1, 2)

d.(3, 1, –2)

Answer 1

So how have you attempted to start this problem and what is giving you difficulty??

Answer 2

You can always "brute force" it by plugging the possible solutions into the equations and seeing which one works.

Answer 3

welll for this you can solve for z and plug that in x or y to get the answer..

Answer 4

You could also use elimination and matrix multiplication.