Find the value if n for which nx+3y=11 and 21x+7y=15 have unique solution
Answers
Answered by
1
Answer:
n will be 13 and X will be 8/7
Answered by
2
Answer:
Step-by-step explanation:
Given they are having a unique solution.
Therefore
a1/a2 ≠ b1/b2
Therefore
n/21 ≠ 3/7
Therefore
n ≠ 3/7 × 21
n ≠ 9
Therefore, for all values of, except 9, the given pair of equations will have a unique solution.
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