this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.
Answer from: Quest
option (b) is correct
step-by-step explanation:
to find the solution of this system, we need to convert it into reduced row-echelon form. we have,
after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,
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