Question

Determinati numerele reale a si b, a>b, stiind ca suma lor este egala cu 10, iar diferenta egala cu 2

Answer 1

a+b=10,
a-b=2⇒a=b+2
b+2+b=10⇒2b=10-2=8⇒b=8/2=4
a=b+2=4+2=6.

Answer 2

a+b=10
a-b=2⇒a=b+2;
⇒b+2+b=10
⇒2b=10-2
⇒2b=8
⇒b=4;
⇒a=4+2
⇒a=6;