Simplify 9m+3+m-3+5m

$9 m + 3 + m - 3 + 5 m$

Combine the opposite terms in $9 m + 3 + m - 3 + 5 m$ .

Subtract $3$ from $3$ .

$9 m + m + 0 + 5 m$

Add $9 m + m$ and $0$ .

$9 m + m + 5 m$

Add $9 m$ and $m$ .

$10 m + 5 m$

Add $10 m$ and $5 m$ .

$15 m$