For this case we have the following expression:
[tex]7p+9t-3p-15t[/tex]
We must group similar terms:
[tex]7p-3p + 9t-15t[/tex]
We add similar terms taking into account that:
- Equal signs are added and the same sign is placed
- Different signs are subtracted and the major sign is placed.
[tex]4p-6t\\\\[/tex]
Answer:
[tex]4p-6t\\\\[/tex]
