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m={[42×(6-40:10)+24]-8}:5

Răspuns :

m = {[42*(6-4)+24]-8}:5

m =[(42*2+24)-8]:5

m = [(84+24)-8]:5

m = (108 - 8):5

m = 100 : 5

m = 20

m={ [42×(6-40:10)+24] -8 }:5=  

{ [42×(6-4)+24] -8 }:5=

[(42×2+24)-8]:5 =

[(84+24)-8]:5=

(108-8):5=

100:5=

20