va rog repede urgent 7 coroana

Va Rog Repede Urgent 7 Coroana class=

Răspuns :

a+b=129
a-b=41
a=41+b
(41+b)+b=129
41+2b=129
2b=129-41
2b=88⇒b=44
a+44=129⇒a=129-44=85