Question

Ajutor!cum se rezolva exercitiul
1625: ((11×a-4):13-5)=13

Answer 1

1 625 : [ ( 11 × a - 4 ) : 13 - 5 ] = 13

( 11 × a - 4 ) : 13 - 5 = 1 625 : 13

( 11 × a - 4 ) : 13 - 5 = 125

( 11 × a - 4 ) : 13 = 125 + 5

11 × a - 4 = 130 × 13

11 × a = 1 690 + 4

a = 1 694 : 11

a = 154 → numarul, aflat prin metoda mersului invers