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MirlaVenus
@MirlaVenus
December 2019
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Monte e resolva as equações
a) 7x+5/2=27
b) 3x+2x+1=6
C) 7x+5x=6
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DudaAlcantat
A) 7x + 5/2 = 27
7x/1 + 5/2 = 27/1
14x/2 + 5/2 = 54/2
14x + 5 = 54
14x = 54 - 5
14x = 49
x = 49/14
b) 3x + 2x + 1 = 6
3x + 2x = - 6 - 1
5x = - 7
x = -7/5
c) 7x + 5x = 6
12x = 6
x = 12/6
x = 2
3 votes
Thanks 4
MirlaVenus
muito obrigado
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7x/1 + 5/2 = 27/1
14x/2 + 5/2 = 54/2
14x + 5 = 54
14x = 54 - 5
14x = 49
x = 49/14
b) 3x + 2x + 1 = 6
3x + 2x = - 6 - 1
5x = - 7
x = -7/5
c) 7x + 5x = 6
12x = 6
x = 12/6
x = 2