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exis [7]
3 years ago
5

Am trying to find the value of r 1/r + 2/1-r = 4/r^2

Mathematics
1 answer:
Mashcka [7]3 years ago
6 0
<span>1/r + 2/1-r = 4/r^2

1-r+2r/r(1-r)=4/r^2
(1+r)/r(1-r)=4/r^2   cancle r both side

1+r/1-r=4/r

cross multiply 
r+r^2=4-4r
r^2+4r+r-4=0
r^2+5r-4=0
r^2+4r+r-4=0
solve it for r factor it...



</span>
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Somebody help<br> 7x - [4x-3(x-1)]=x+ 12
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Answer:

Step-by-step explanation:

Simplificando

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Reordenar los términos:

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Combinar términos semejantes: 4x + -3x = 1x

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Reordenar los términos:

-3 + 7x + -1x = x + 12

Combinar términos semejantes: 7x + -1x = 6x

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Reordenar los términos:

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Resolviendo

-3 + 6x = 12 + x

Resolviendo para la variable 'x'.

Mueva todos los términos que contengan x hacia la izquierda, todos los demás términos hacia la derecha.

Agrega '-1x' a cada lado de la ecuación.

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Combinar términos semejantes: x + -1x = 0

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Combinar términos semejantes: -3 + 3 = 0

0 + 5x = 12 + 3

5 veces = 12 + 3

Combinar términos semejantes: 12 + 3 = 15

5 veces = 15

Divida cada lado por '5'.

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Simplificando

x = 3

7 0
3 years ago
Which of the following is not an itemized deduction?
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Answer:


Depends on which answer they give you to answer. If you have the one I have which is *IRA contribution* then go for it!


6 0
3 years ago
Read 2 more answers
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alina1380 [7]

Answer:

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