Question

Afla Nr necunoscut::
{[(2a+3)×2+3]×2+3}×2+3=88
Ajutor am nevoie urgent dau coroana

Answer 1

{[(2a+3)×2+3]×2+3}×2+3=88
{[(2a+3)×2+3]×2+3}×2=88-3
{[(2a+3)×2+3]×2+3}×2=85
{[(2a+3)×2+3]×2+3}=85÷2
[(2a+3)×2+3]×2+3=42,5
[(2a+3)×2+3]×2=42,5-3
[(2a+3)×2+3]x2=39,5
(2a+3)×2+3=39,5÷2
(2a+3)×2+3=19,75
(2a+3)×2=19,75-3
(2a+3)×2=16,75
(2a+3)=16,75÷2
2a+3=8.375
2a=8,375-3
2a=5,375
a=5,375÷2
a=2,6875