# math

posted by
**Jazzy**
.

Combine like terms.

12.) 7r4 + 13r2 + 9r

13.) 3 - 4x - 15x - 6x - 1

Thanks to whoever helps me :D

posted by
**Jazzy**
.

Combine like terms.

12.) 7r4 + 13r2 + 9r

13.) 3 - 4x - 15x - 6x - 1

Thanks to whoever helps me :D