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GabriellyRDias
@GabriellyRDias
August 2019
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Resolva as equacoes
A) x-5 =8
B) 3x+6=12
C) 2=7y-5
D)5c +2 =3c-9
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caio0202
A) x-5 =8
x = 8 + 5
x = 13
B) 3x+6=12
3x = 12 - 6
3x = 6
x = 6/3
x = 2
C) 2=7y-5
7y - 5 = 2
7y = 2 + 5
7y = 7
y = 7/7
y= 1
D)5c +2 =3c-9
5c - 3c = -9 - 2
2c = -11
c = -11/2
0 votes
Thanks 2
valterbl
Olá.
a) x-5=8
x=8+5
x=13
b) 3x+6=12
3x=12-6
3x=6
x=6/3
x=2
c) 2=7y-5
-7y=-5-2
-7y=-7 (-1) a incógnita não pode ser negativa.
7y=7
y=7/7
y=1
d) 5c+2=3c-9
5c-2c=-9-2
3c=-11
c= - 11/3
Espero ter ajudado.
0 votes
Thanks 1
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x = 8 + 5
x = 13
B) 3x+6=12
3x = 12 - 6
3x = 6
x = 6/3
x = 2
C) 2=7y-5
7y - 5 = 2
7y = 2 + 5
7y = 7
y = 7/7
y= 1
D)5c +2 =3c-9
5c - 3c = -9 - 2
2c = -11
c = -11/2
a) x-5=8
x=8+5
x=13
b) 3x+6=12
3x=12-6
3x=6
x=6/3
x=2
c) 2=7y-5
-7y=-5-2
-7y=-7 (-1) a incógnita não pode ser negativa.
7y=7
y=7/7
y=1
d) 5c+2=3c-9
5c-2c=-9-2
3c=-11
c= - 11/3
Espero ter ajudado.