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Adrianaconcurseira
@Adrianaconcurseira
April 2020
2
19
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O valor de X na proporção
X + 4
=
25 + X
9 12
a)
59
b
) 61
c)
60
d)
62
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AntoniLAD
Verified answer
X + 4
=
25 + X
9 12
12.x+4=9.25+x
12x+48=225+9x
12x-9x=225-48
3x=177
x=177/3
x=59
Alternativa A
1 votes
Thanks 1
Guther
X + 4
=
25 + X
9 12
---------------------------------------------------------------------------------------------------------------------
mmc (9, 12) = 36
---------------------------------------------------------------------------------------------------------------------
4x + 16 = 75 + 3x
4x - 3x = 75 - 16
x = 59
---------------------------------------------------------------------------------------------------------------------
Resposta: 59
Letra A
0 votes
Thanks 0
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Verified answer
X + 4 = 25 + X9 12
12.x+4=9.25+x
12x+48=225+9x
12x-9x=225-48
3x=177
x=177/3
x=59
Alternativa A
9 12
---------------------------------------------------------------------------------------------------------------------
mmc (9, 12) = 36
---------------------------------------------------------------------------------------------------------------------
4x + 16 = 75 + 3x
4x - 3x = 75 - 16
x = 59
---------------------------------------------------------------------------------------------------------------------
Resposta: 59
Letra A