how do you add the voltage together in parallel with out curent resistants.
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Are you asking how to add parallel voltages without being given currents or resistances?
If so, and if you are dealing with solely resistors then you need to simply follow Kirchoff's Voltage Law. This states that all voltages in a loop equal up to zero before the potentials reach ground.
If you have multiple resistors in parallel, whether they are they same resistances or not, they will both receive the same voltage. However, they will each have a different current flowing through them by the relation of V = IR.
Where V is the voltage that is presented at the node that joins the two resistors in parallel and R represents the resistance of each individual resistor.
If you have any more questions about this subject, search the website, I have made multiple posts on KVL, KCL, Node Voltage and Ohm's Law that provide very good in-depth explanations of these concepts.
Jeff
