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KelvinGtGamer
@KelvinGtGamer
December 2019
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A)3(x-1)=2(x+4) b)5(a-2)=3(a+6) c)X =3 D)X-3=6 valendo 15 pontos ajudem pfv
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rafael10072002
A} 3 {x - 1} = 2 {x + 4}
3x - 3 = 2x + 8
3x - 2x = 8 + 3
x = 11
b} 5 {a - 2} = 3 {a + 6}
5a - 10 = 3a + 18
5a - 3a = 18 + 10
2a = 28
a = 28/2
a = 14
c} X = 3
d} x- 3 = 6
x = 6 + 3
x = 9
2 votes
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3x - 3 = 2x + 8
3x - 2x = 8 + 3
x = 11
b} 5 {a - 2} = 3 {a + 6}
5a - 10 = 3a + 18
5a - 3a = 18 + 10
2a = 28
a = 28/2
a = 14
c} X = 3
d} x- 3 = 6
x = 6 + 3
x = 9