It is known that x = 1, y = - 1 is the solution of the equation Mn + 2ny = 0, x = m, yn is the solution of the equation 3x + y = 7, finding the value of M and N is a process plus There is a wrong number: x = m, y = n, missing an equal sign, now there is nothing wrong! Hee hee, | Math enthusiast | Mathematical art

It is known that x = 1, y = - 1 is the solution of the equation Mn + 2ny = 0, x = m, yn is the solution of the equation 3x + y = 7, finding the value of M and N is a process plus There is a wrong number: x = m, y = n, missing an equal sign, now there is nothing wrong! Hee hee,

mn-2n=0
3m+n=7
We can know M = 2 or n = 0 by equation 1
Then there is equation two
m=2 n=1
m=3/7 n=0

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