12 m + 9 = ( 2 m
Solve for m
m=-\frac{9}{10}=-0.9
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12m+9-2m=0
Subtract 2m from both sides.
10m+9=0
Combine 12m and -2m to get 10m.
10m=-9
Subtract 9 from both sides. Anything subtracted from zero gives its negation.
m=\frac{-9}{10}
Divide both sides by 10.
m=-\frac{9}{10}
Fraction \frac{-9}{10} can be rewritten as -\frac{9}{10} by extracting the negative sign.
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