Jawabanmu

2014-08-21T18:16:44+07:00
Cara 1 = 5/4 x 16 = 20
cara 2 = 64/80 = 100-x/100
=6400=8000-80x
80x=8000-6400 = 1600
x = 1600/80=20 drajat C
2014-08-21T18:23:29+07:00
400-4x = 320
-4x = 320-400
-4x = -80
x = 20

=20°C