Respuesta :

cad311
3. 6x + 10 - x + 9
=5x + 19

just combine all the like terms

4. 10 + 5f + 6 + 2f - 9
=7 + 7f

5. m^2 + 12 + 3m^2 + 5n + 3 - n
=4m^2 + 15 + 4n

6. 3w + 4u + 9 + 2w + 5u + 1
=5w + 9u + 10

Answer:

3) 5x + 19

4) 7f + 7

5) 4m^2+4n+15

6) 9u + 5w + 10