👤

Stiind ca 8a+7b=249 si 5a+6b =193calculati a+b

Răspuns :

adunam relatiile
13a+13b=442
13(a+b)=442
a+b=442/13
a+b=34
8a+7b+5a+6b=249+193
13(a+b)= 442
a+b=2*17
a+b=34

O seara buna!