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Caroljf06
@Caroljf06
July 2022
2
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Resolva:
a) 9 = x + 17
b) -5 = y - 8
c) 2y sobre 5 = 4
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PauloCésarL
Verified answer
A) 9 = x+17
-Isole o X-
x=9-17
x= -8
b)-5 = y -8
-Isole o Y-
y= -5 + 8
y= +3
c)2y/5=4
-Quem está dividindo passe pro outro lado multiplicando-
2y=4.5
2y=20
y=20/2
y= +10
2 votes
Thanks 2
rosanebarranco
Verified answer
A) 9 = x + 17
9 - 17 = x
- 8 = x ou
x = - 9
b) - 5 = y - 8
- 5 + 8 = y
+ 3 = y ou
y = + 3
c) 2y/5 = 4
MMC = 5
2y/5/1 = 4/1/5
2y = 20
y = 20/2
y = 10
1 votes
Thanks 2
PauloCésarL
Na alternativa ''B'' , você esqueceu de trocar o sinal , com o isso sua resposta está incorreta .
PauloCésarL
- 5 = y - 8 , seria ;
y= -5 +8
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Lista de comentários
Verified answer
A) 9 = x+17-Isole o X-
x=9-17
x= -8
b)-5 = y -8
-Isole o Y-
y= -5 + 8
y= +3
c)2y/5=4
-Quem está dividindo passe pro outro lado multiplicando-
2y=4.5
2y=20
y=20/2
y= +10
Verified answer
A) 9 = x + 179 - 17 = x
- 8 = x ou
x = - 9
b) - 5 = y - 8
- 5 + 8 = y
+ 3 = y ou
y = + 3
c) 2y/5 = 4
MMC = 5
2y/5/1 = 4/1/5
2y = 20
y = 20/2
y = 10
y= -5 +8