Question 662750
{{{(8273xyzi+8137317634717238723187182738712387123781237865349xyzi-127361623717xyzi) 
-(17273127236371478816286473217912884307xyzi+712783198312893478341782123901230998xyzi)}}}   


you have unknown variable {{{xyzi}}} and you just add or subtract coefficients in front of it  


first add these two: {{{8273xyzi+8137317634717238723187182738712387123781237865349xyzi=8137317634717238723187182738712387123781237873622xyzi}}} 

and you will have

{{{(8137317634717238723187182738712387123781237873622xyzi- 127361623717xyzi)-(17985910434684372294628255341814115305 xyzi)}}}

then subtract {{{127361623717xyzi}}} and do same with numbers in second parentheses 


={{{8137317634717238723187182738712387123653876249905xyzi-17985910434684372294628255341814115305 xyzi}}}  

={{{813731763469925281275249836641775888312062134600 xyzi}}}