👤

a+a+a+7135=9200+a+a urgeeent aflatil pe a

Răspuns :

3a+7135=9200+2a
3a-2a=9200-7135
a=2065
a+a+a+7135=9200+a+a
3a+7135=9200+2a |:2a
a+7135=9200
a=9200-7135
a=2065