Tolong ya cuma 2 aja kok. caranya ya. makasih
(13b - 8b) + (12a + 9b) =
(15i + 14b + 13k) + (-30i - 45j + 51k) =

1
(13b-8b)+(12a+9b) = =13b-8b+12a+9b
=13b-8b+9b+12a
=13b+12a

(15i+14b+13k)+(-30i-45j+51k)
=15i+14b+13k-30i-45j+51k
=15i-30i+13k+51k+14b-45j
=-15i+64k+14b-45j

Jawabanmu

Jawaban paling cerdas!
2014-08-28T18:55:24+07:00
(13b - 8b) + (12a+9b) = 5b + 9b + 12a = 14b + 12a
(15i + 14b + 13k ) + (-30i - 45j + 51k ) = 15i - 30i + 14b +13k + 51k + 45j
= -15i + 14b + 64k + 45j
diuraikan ke bawah bisa ga? klo ke samping jdi gak ngerti. tolong ya di edit
itu 2 soal apa 1 soal?
2 soal
(1) (13b - 8b) + (12a+9b) = 5b + 9b + 12a = 14b + 12a
(15i + 14b + 13k ) + (-30i - 45j + 51k ) = 15i - 30i + 14b +13k + 51k + 45j
= -15i + 14b + 64k + 45j
(13b - 8b) + (12a+9b) = 5b + 9b + 12a = 14b+12a
(15i + 14b + 13k ) + (-30i - 45j + 51k ) = 15i - 30i + 14b +13k + 51k + 45j
= -15i + 14b + 64k + 45j