Răspuns :
a-b=61.2
a=3b
3b-b=61.2
2b=61.2
b=30.6
a=30.6*3
a=91.8
VERIFICARE:
91.8-30.6=61.2 ADEVARAT
a=3b
3b-b=61.2
2b=61.2
b=30.6
a=30.6*3
a=91.8
VERIFICARE:
91.8-30.6=61.2 ADEVARAT