Question

afla necunoscuta ascunsa (a+5)-6=10

Answer 1

(a+5)-6=10
6-10=4
16-6=10

Answer 2

(a+5)-6=10
a+5=10+6
a+5=16
a=16-5
a=11

Verificare:

(11+5)-6=10
16-6=10

Succes!