Answer:
5a + 5b
Step-by-step explanation:
13a - 8a + 9b - 4b =
Combine like terms. 13a and -8a are like terms and can be combined.
9b and -4b are like terms and can be combined.
= 5a + 5b
Answer:
Step-by-step explanation:
[tex]13a-8a+9b-4b\\\mathrm{Add\:similar\:elements:}\:13a-8a=5a\\=5a+9b-4b\\\mathrm{Add\:similar\:elements:}\:9b-4b=5b\\=5a+5b[/tex]
