M and N are reciprocal. The sum of the product of M and N and X is 25 / 7. What is x?

M and N are reciprocal. The sum of the product of M and N and X is 25 / 7. What is x?

M and N are reciprocal,
MN=1；
M. The sum of the product of N and X is 25 / 7. What is x?
1+x=25/7;
x=18/7;
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35m is 7 / 9 of () M

45

When m = what, the value of 7 (m-1) / 9 (m-1) is 7 / 9
I just want to know why m = 0 and the answer, I write M = 2 or 0 wrong

Big brother, when m is not equal to 1, (m-1) is not equal to 0, so it can be reduced from the numerator denominator, and the rest is 7 / 9 = 7 / 9, which is an identity. So, the answer to this question is, when m is not equal to 1, any real number satisfies the equation