É só multiplicar as frações:
(1/2) . (1/4) . (1/10) . 800 = (1/80) . 800 = (1 . 800)/80 = 800/80 = 10
(1/2) . (1/4) . (1/10) . 800 = x
x = 800 . (1/80)
x = 10
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É só multiplicar as frações:
(1/2) . (1/4) . (1/10) . 800 = (1/80) . 800 = (1 . 800)/80 = 800/80 = 10
(1/2) . (1/4) . (1/10) . 800 = x
x = 800 . (1/80)
x = 10