Question

[5•(5•5+5:5)-a]=103 aflati nr necunoscut

Answer 1

[5•(5•5+5:5)-a]=103; [5•(25+1)-a]=103; [5•26-a]=103; 130-a=103; a=130-103; a=27

Answer 2

[5×(25+1)-a]=103
(5×26)-a=103
130-a=103
a=130-103
a=27