Question

Ma gandesc la un numar aia e

Answer 1

[(a * 7) : 2 + ( 4 * 7)] : 6 = 7
(7a : 2) + 28 = 7 * 6
7a : 2 = 42 - 28
7a = 14 * 2
a = 28 : 7
a = 4

Answer 2

[(x•7):2+4•7]:6=7
(x•7):2+28=7•6
(x•7):2+28=42
(x•7):2=42-28
(x•7):2=14
x•7=14•2
x•7=28
x=28:7
x=4