Solve for d
d = \frac{19}{9} = 2\frac{1}{9} \approx 2.111111111
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7-9d+12=0
Add 3 and 4 to get 7.
19-9d=0
Add 7 and 12 to get 19.
-9d=-19
Subtract 19 from both sides. Anything subtracted from zero gives its negation.
d=\frac{-19}{-9}
Divide both sides by -9.
d=\frac{19}{9}
Fraction \frac{-19}{-9} can be simplified to \frac{19}{9} by removing the negative sign from both the numerator and the denominator.
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