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SebySecara400
a fost răspuns

27supra10 × [3supra2 - 5supra6 × (3supra5 - 1supra15)]=??

[5supra2 - 24supra25 × (25supra16 ×3supra8)] : 6supra5 =???



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Răspuns :

Needhelp112
   27/10 x [3/2 - 5/6 x (3/5 - 1/15)] = 
= 27/10 x [3/2 - 5/6 x (9/15-1/15)] =
= 27/10 x [3/2 - 5/6 x 8/15)] = 
= 27/10 x (3/2 - 4/9) =
= 27/10 x (27/18 - 8/18) = 
= 27/10 x 19/18 = 
= 57/20

   [5/2 - 24/25 x (25/16 x 3/8)] : 6/5 =
= (5/2 - 24/25 x 75/128) x 5/6 = 
= (5/2 - 9/16) x 5/6 =
= (40/16 - 9/16) x 5/6 =
= 31/16 x 5/6 = 
= 155/96

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