Solve for r
r=2
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-4-5r+r=-6r
Add r to both sides.
-4-4r=-6r
Combine -5r and r to get -4r.
-4-4r+6r=0
Add 6r to both sides.
-4+2r=0
Combine -4r and 6r to get 2r.
2r=4
Add 4 to both sides. Anything plus zero gives itself.
r=\frac{4}{2}
Divide both sides by 2.
r=2
Divide 4 by 2 to get 2.
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Limits
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