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gabriellaazevedo
@gabriellaazevedo
October 2020
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Somando 16/3 aos 23/4 de um número, obtém - se 15/2 do mesmo número menos 5/3.
Determine esse número..
Me ajudem !!! por favor...
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JPVA
16/3 + 23x/4 = 15x/2 -5/3 mmc 3, 4, 2, = 12
64 + 69x = 90x - 20
64 + 20 = 90x - 69x
84 = 21x
x = 84 /21
x = 4
10 votes
Thanks 17
raphaels10
Vamos chamar o número de X.
(23X/4) + 16/3 = (15X/2) - 5/3
Ajeitando a equação:
(16/3) + (5/3) = (15X/2) - (23X/4)
Tirando o mmc:
21/3 = (30X/4) - (23X/4)
7 = 7X/4
28 = 7X
X = 4
Resposta: 4
5 votes
Thanks 6
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Lista de comentários
64 + 69x = 90x - 20
64 + 20 = 90x - 69x
84 = 21x
x = 84 /21
x = 4
(23X/4) + 16/3 = (15X/2) - 5/3
Ajeitando a equação:
(16/3) + (5/3) = (15X/2) - (23X/4)
Tirando o mmc:
21/3 = (30X/4) - (23X/4)
7 = 7X/4
28 = 7X
X = 4
Resposta: 4