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13+49:{[36+50]:2-[2x(8+18)-(48:3)]}=


Răspuns :

13+49:{[36+50]:2-[2x(8+18)-(48:3)]}=20

1) 8+18=26

2) 48:3=16

3) 36+50=86

4) 2×26=52

5) 52-16=36

6) 86:2=43

7) 43-36=7

8) 49:7=7

9) 13+7=20

Răspuns:

20

Explicație pas cu pas:

  13 + 49 : {(36 + 50) : 2 - [2 · (8 + 18) - (48 : 3)]} =

= 13 + 49 : [86 : 2 - (2 · 26 - 16)] =

= 13 + 49 : [43 - (52 - 16)] =

= 13 + 49 : (43 - 36) =

= 13 + 49 : 7 =

= 13 + 7 =

= 20