Important:
When all variables occur only as denominators, then
DO NOT CLEAR OF FRACTIONS!!!. Instead leave the fractions and
use elimination:
To eliminate y, multiply the second equation through by 3
Add corresponding terms:
Take reciprocals of both sides:
Multiply both sides by 11
Now substitute for in one of the original
equations:
NOW it is OK to clear of fractions,
Multiply through by 10y:
Edwin
