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8r-8=-32 What does r equal?

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hannahm0914 | eNotes Newbie

Posted October 21, 2013 at 8:24 PM via web

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8r-8=-32

What does r equal?

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baxthum8 | High School Teacher | (Level 3) Associate Educator

Posted October 21, 2013 at 8:32 PM (Answer #1)

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Solve `8r - 8 =-32.`

Add 8 to both sides to combine like terms.

`8r-8+8 = -32+8`

`8r = -24` Divide both sides by 8.

`(8r)/8 = (-24)/8`

`r = -3`

The solution is r = -3.

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kingattaskus12 | (Level 3) Adjunct Educator

Posted November 15, 2013 at 2:42 AM (Answer #2)

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Since `-8` does not contain the variable to solve for, move it to the right-hand side of the equation by adding `8` to both sides.

`8r=8-32`


Subtract `32` from `8` to get `-24` .

`8r=-24`


Divide each term in the equation by `8` .

`(8r)/(8) =-24/8`


Simplify the left-hand side of the equation by canceling the common factors.

`r = -24/8`


Simplify the equation. Therefore,

`r = -3`

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atyourservice | Student , Grade 10 | eNoter

Posted February 28, 2014 at 10:20 PM (Answer #3)

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`8r-8=-32`

add 8 to both sides

`8r-8+8=-32+8`

`8r=-24`

divide by 8 to get r by itself

`(8r)/8 = (-24)/8`

r=-3

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