What value of x makes the equation $-9=r+6$ true?

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Answer 1 · 2016-12-03T20:38:42

This equation is true for $r=-15$ . See explanation.

To solve this equation you have to move $6$ to the left side.

$-9=r color(red)(+6)$

$-9 color(red)(-6)=r$

$r=-15$

What value of x makes the equation -9=r+6-9=r+6 true?