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15:[11-(7x5-9x9:x:3):8+2x4]x3=3 Aflati-l pe x

Răspuns :

Cocirmariadenis
15:[11-(7x5-9x9:x:3):8+2x4]x3=3
15:[11-(35-81:x:3):8+8]=3:3
[11-(35-81:x:3):8+8]=15:1
11-(35-81:x:3):8+8=15
11-(35-81:x:3):8=15-8
(35-81:x:3):8=11-7
35-81:x:3=4x8
81:x:3=35-32
81:x=3x3
81:x=9
x=81:9
x=9

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