-2m = 16m - 9
First, take '16m' from both sides.
 Second,
Second, add '-2m - 16m' to get '-18m'.
 Third,
Third, divide both sides by '-18'.
 Fourth,
Fourth, change the fraction into a negative.
 Fifth,
Fifth, find the GCF of 9 and 18.
The GCF is 9.
Sixth,  divide the numerator by the GCF.

 ÷ 
 Seventh,
Seventh, divide the denominator by the GCF.

 ÷ 
 Eighth,
Eighth, rewrite the fraction in simplest form.

Answer as fraction: 

Answer as decimal: 
