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At least two - otherwise you have just one equation, not a system.

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Q: How many facts need to have when formulating a system of equations?
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Related questions

If a system of equations is inconsitient how many solutions will it have?

If a system of equations is inconsistent, there are no solutions.


If a system of equations is independent how many soultions will it have?

A system of equations may have any amount of solutions. If the equations are linear, the system will have either no solution, one solution, or an infinite number of solutions. If the equations are linear AND there are as many equations as variables, AND they are independent, the system will have exactly one solution.


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A set of equations is inconsistent, if its solution set is empty.


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A system of linear equations can only have: no solution, one solution, or infinitely many solutions.


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if a dependent system of equation is solved, how many solutions will there be?


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The answer follows:


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