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Unicornulistet
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8-[6400÷16-(360-a×2)×5]÷20=3
?????vă rogg repedeeee!!!:))

Răspuns :

Rapunzel15
8-[6400÷16-(360-a×2)×5]÷20=3
[6 400:16-(360-a×2)×5 ]:20 = 8-3
[6400÷16-(360-a×2)×5]:20 = 5
[400-(360-a×2)×5] = 5×20
400-(360-a×2)×5 = 100
(360-a×2)×5 = 400-100
(360-a×2)×5 = 300
(360-a×2) = 300:5
360-a×2 = 60
a×2 = 360-60
a×2 = 300
a = 300:2
a = 150


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