Resolva as seguintes equações sendo U = Q
a) -X=9
b) -x=-2
c) -7x= -14
d)-3x= 10
f) -5x= -12
a) -X=9
b) -x=-2
c) -7x= -14
d)-3x= 10
f) -5x= -12
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x = - 9
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- x = - 2 . (-1)
x = 2
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- 7x = - 14 .(-1)
7x = 14
x = 14/7
x = 2
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- 3x = 10 .(-1)
3x = - 10
x = - 10/3
--------------------------------------------
- 5x = - 12 .(-1)
5x = 12
x = 12/5