AVALIAÇÃO DE MATEMÁTICA-SÉTIMO ANO
Autor: Míriam Luiza | Publicado: 2012-05-01T01:06:00-03:00



<!--[if !supportLists]-->1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Resolver as equações abaixo, sendo U = Q justificando os
cálculos. Escreva o conjunto verdade de cada equação. Cada equação resolvida corretamente
vale 0,5 ponto: 

<!--[if !supportLists]-->a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->4x = 28

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<!--[if !supportLists]-->b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->5x + 1 = 36



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<!--[if !supportLists]-->c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->2x – 8 = 8

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<!--[if !supportLists]-->d)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->7x – 4 = 10

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<!--[if !supportLists]-->e)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->2x + 1 = -8

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<!--[if !supportLists]-->f)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->11 – 3x = 2

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<!--[if !supportLists]-->g)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->3x = - 7 + x

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<!--[if !supportLists]-->h)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->9x + 5 = 4x

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<!--[if !supportLists]-->i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->20 = -6x + 32



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<!--[if !supportLists]-->j)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->7 x – 17 = 200

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<!--[if !supportLists]-->2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->( 1,5) ( UFJF-MG) O conjunto solução da equação da
equação 0,5x = 0,3 – 0.5x é: ( Deixar os cálculos ou justificativas nesta
folha)



<!--[if !supportLists]-->a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->0,3

<!--[if !supportLists]-->b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->0,5

<!--[if !supportLists]-->c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->0,8

<!--[if !supportLists]-->d)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->1,3





<!--[if !supportLists]-->3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->( 2,0) Resolva as equações abaixo: 



<!--[if !supportLists]-->a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->7x + 1 – 5x = 9

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<!--[if !supportLists]-->b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->17x – 1 =15x + 3



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<!--[if !supportLists]-->c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->3.( 2.x + 1 ) = 7&nbsp;&nbsp;&nbsp;




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<!--[if !supportLists]-->d)&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->x + 3X/2&nbsp;= 5&nbsp; 



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<!--[if !supportLists]-->4)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->( 1,5) Qual o número que somado ao seu triplo dá 60?
Montar uma equação na incógnita x e resolvê-la.



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