11-3a=8a+31pakecara tolong dong bantuin

-8a-3a =-11+31
-11a = -20
a = 11/-20

Maaf kalau jawaban tidak sesuai.

11-3a=8a+31
-3a-8a=31-11
-11a=20
a=-20/11
a= – 1 9/11