am nevoie urgent
plz ma abonez si dau coroana

Răspuns:
[2×(2x+1)+2]: 2 = 22
[2×(2x+1)+2] = 22 × 2
[2×(2x+1)+2] = 44
( 2x+1)+2 = 44 : 2
( 2x+1) + 2 = 22
2x + 1 = 22 -2
2x + 1 = 20
2x = 20-1
2x = 19
19 : 2 = 9.5
X= 9.5