Question

afla numărul ecunoscut (a:6+6):6=4

Answer 1

( a : 6 + 6 ) : 6 = 4

a : 6 + 6 = 4 × 6

a : 6 + 6 = 24

a : 6 = 24 - 6

a : 6 = 18

a = 18 × 6

a = 108 → numarul, aflat prin metoda mersului invers

Verific:

( 108 : 6 + 6 ) : 6 = 4

= ( 18 + 6 ) : 6 =

= 24 : 6 =

= 4

Answer 2

(a:6+6):6=4

a:6+6=24

a:6=18

a=108