Question

If the pair of linear equations 2x + 3y = 7 and (m + n) x + (2m - n) y = 21 have innnitely
many solutions, then the value of'm' and 'n' are
A) m = 1, n = 5
BJ m = 5, n=1
C] m= -1, n = 5 D] m = 5, n = -1
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Answer 1

Answer:

answer is D) m=5 n=-1 hope will help you