Stie cineva cum sa rezolve ecuatia prin metoda reduceri
3p+5q=19
7p=-14


Răspuns :

3p+5q=19
7p=-14 |:7
p=-2
3p+5q=19
3×(-2)+5q=19
-6+5q=19
5q=19+6
5q=25
q=25:5
q=5
7p=-14=>p=-2
3p+5q=19
-6+5q=19
5q=25
q=5