Question

15-acolada 18-paranteza patrata(2xX-8):3-5paranteza patrata :3+12inchidem acolada:9+2egal14

Ajutatima!

Answer 1

15 - { 18 - [ (2 x x - 8 ) :3-5 ] :3+12 } :9 +2 = 14 
15 - { 18 - [( 2xx - 8):3-5] +12 } :9 = 14-2 
 {18 - [ (2 x x - 8 ) :3-5 ] :3+12 } :9 = 15 - 12  
 18 - [ (2 x x - 8 ) :3-5 ] :3+12  = 3x 9
 18 - [ (2 x x - 8 ) :3-5 ] :3 = 27 -12 
  [ (2 x x - 8 ) :3-5 ] :3 = 18 - 15 
(2 x x - 8 ) :3-5 = 3x3 
( 2xx -8 ) : 3 = 9+5
2xx- 8 = 14x3
2xx - 8 = 42 
2x = 42-8
2x=34
x=34:2
x=17