Answer:
1st: 3m + 4
2nd: 5m + 4
3rd: 3m + 4
Explanation:
Lets simplify each expression so we can match them.

Use the distributive property, distribute 2

Add m terms

Subtract 6 and 2

Now for our next expression.

Distribute 5

Subtract 4 and 1

Now for the final expression

Add m terms

Add 1 and 3
