Solve for r
r=-\frac{2}{3}\approx -0.666666667
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4r+2-r=0
Subtract r from both sides.
3r+2=0
Combine 4r and -r to get 3r.
3r=-2
Subtract 2 from both sides. Anything subtracted from zero gives its negation.
r=\frac{-2}{3}
Divide both sides by 3.
r=-\frac{2}{3}
Fraction \frac{-2}{3} can be rewritten as -\frac{2}{3} by extracting the negative sign.
Examples
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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