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determinati nr x:20:{[3×(×-6)+20]:8}+5=10

Răspuns :

20:{[3×(×-6)+20]:8}+5=10
20:{[3×(×-6)+20]:8} = 10 - 5
20:{[3×(×-6)+20]:8} = 5
[3×(×-6)+20]:8 = 20 : 5
[3×(×-6)+20]:8 = 4
3×(×-6)+20 = 4×8
3×(x-6) = 32 - 20
3×(x-6) = 12
x-6 = 12 : 3
x- 6 = 4
x = 4+6
x = 10