Respuesta :
Answer:
t - 6r
Step-by-step explanation:
[tex]8t+3r-7t-9r\qquad\text{combine like terms}\\\\=(8t-7t)+(3r-9r)\\\\=1t-6r[/tex]
Answer:
Step-by-step explanation:
[tex]8t+3r-7t-9r\qquad\text{combine like terms}\\\\=(8t-7t)+(3r-9r)\\\\=1t-6r[/tex]