Tolong Dijawab No 1-5 pake Cara Kerja Terimakasih

1. AB=m , BC=n
AC = AB+BC = m+n
Maka AC:BC = (m+n):n

2. AB : BC = 4 : 7
AC = 4+7 = 11
Sehingga AB : AC = 4 : 11

3. BC = 21cm
Perbandingan AB : BC = 3 : 7
Misal
7x= 21
x = 21/7
x = 3
Maka AB 3x= 3.3=9 cm

4. KL : LM = 7 : 5
KM = 24 cm
x = 24 : (7+5) = 24 : 12 = 2
Maka KL = 7x = 7.2 = 14

5. PR = 25 cm
QR = 10 cm
Q ada diantara P & R

_____________
P ?? Q 10 R
______25_____

PQ = 25-10 = 15
Perbandingan PQ : QR = 15:10 = 3:2