Question

Pldv
4l+3m=96
l+m=27
Menggunakan metode subtitusi
Jawab yahh mau dikumpulin

Answer 1

4l + 3m =96.......(1)
l+m = 27.............(2)
l = -m + 27..........(3)

(3).....(1)
4l + 3m = 96
4 (-m+27) + 3m = 96
-4m + 108 + 3m = 96
108 - m = 96
-m = 96-108
-m = -12
m = 12

l + m = 27
l + 12 = 27
l = 27 - 12
l = 15