Răspuns :
6*x= multiplii lui 15 =(30,60,90)
1. 6*x=30;
x=30:6=5;
2. 6*x=60;
x=60;6=10;
3. 6*x=90;
x=90:6=15;
x apartine {5,10,15}
1. 6*x=30;
x=30:6=5;
2. 6*x=60;
x=60;6=10;
3. 6*x=90;
x=90:6=15;
x apartine {5,10,15}