It depends. Partly on the domain over which your system of equations is defined - are they integer solutions? Reals or complex numbers? Are the equations linear or more complicated?
In any case, there can be none, one or many - including infinitely many.
If the system is inconsistent eg
a + b = 3
a + b = 2
then there are no solutions.
If the system is incomplete (the relevant matrix is singular), you have an infinite number:
a + b + c = 1
a + 2b + 3c = 2
has an infinite number of solutions.
A set of n independent linear equations in n unknowns will have a unique solution.
A single equation such as (a-2)2 + (b-3)2 + (c-7.5)2 = 0
has a unique real-number solution since each on the brackets MUST be zero.
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your taking nova net..... its one solution.
It has more than one solutions.
2
Infinite simultaneous solutions. (The two equations represent the same line) OR If your in nova net the answer should be ( Many )
None, one or many - including infinitely many.