Question

DAU COROANA EX. CU MA GANDESC LA UN NR.

Answer 1

{[(ax7):2]+(4x7)}:6=7 =>

[(ax7):2]+28= 7x6 =>

[(ax7):2]+28= 42 =>

(ax7):2= 42-28 =>

(ax7):2= 14 =>

ax7= 14x2 =>

ax7= 28 =>

a= 28:7 =>

a= 4

4 este numarul la care m-am gandit :)

Answer 2

Notez numarul cu ,, a"

[ ( a x 7 ) : 2 + ( 4 x 7 ) ] : 6 = 7

( a x 7 ) : 2 + 28 = 7 x 6

( a x 7 ) : 2 = 42 - 28

a x 7 = 14 x 2

a x 7 = 28

a = 28 : 7

a = 4 → numarul

Verific:

( 4 x 7 : 2 + 28 ) : 6 = ( 14 + 28 ) : 6 = 42 : 6 = 7