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[55x5-(199-99x2+20x5)+220:10]:4-19 va rog rapid ​

Răspuns :

  [55 x 5 - (199 - 99 x 2 + 20 x 5) + 220 : 10] : 4 - 19 =

= [275 - (199 - 198 + 100) + 22] : 4 - 19 =

= [275 - (1 + 100) + 22] : 4 - 19 =

= (275 - 101 + 22) : 4 - 19 =

= (174 + 22) : 4 - 19 =

= 196 : 4 - 19 =

= 49 - 19 =

= 30