(13a-8b)+(21a+9b)=bgaimana caranya

Jawaban :

= (13a – 8b) + (21a + 9b)
= 13a + 21a – 8b + 9b
= 34a + 1b
= 34a + b

▫◽◻⬜ Hakiki ⬜◻◽▫