Like terms are terms that have something in common like an exponent or variable
8. 3a & 16a
9. [tex]5x^3[/tex] &[tex]7x^3[/tex]
10. [tex]6b^2[/tex] & [tex]b^2[/tex]
11. [tex]12t^2[/tex] & [tex]4t^2[/tex] &[tex]2t^2[/tex]
Try 12 & 13 on your own to see if you get the hang of it - if you want me to check it ; put your answer in the comment section of my answer :))) I believe in you .