Simplify 6.1m-4.2+3.7n-9.4m+5.5n

$6.1 m - 4.2 + 3.7 n - 9.4 m + 5.5 n$

Subtract $9.4 m$ from $6.1 m$ .

$- 3.3 m - 4.2 + 3.7 n + 5.5 n$

Add $3.7 n$ and $5.5 n$ .

$- 3.3 m - 4.2 + 9.2 n$

Move $- 4.2$ .

$- 3.3 m + 9.2 n - 4.2$