Răspuns:
[48+ 50x100 : (28 :a + 6)-14] x [(50 -20) +(143-24)]= 42 316
[34+ 50 x 100: (28 :a +6)] x (30+ 119)= 42 316
[34 + 50 x 100 :(28 :a + 6)] x 149= 42 316
34 + 50 x 100: (28 : a +6)= 384
50x 100 :( 28 :a +6)= 350
100 :(28 :a + 6)= 7
28 : a + 6= 700
28:a = 694 => a= 694 x 28
a= 19 432