Hitunglah nilai a, b, c dan d pada gambar berikut!
A) 4/a =6/9
6a=36
a=36/6=6
b) 8/12 =b/b+4
8b+32=12b
32=12b-8b
32=4b
b=8
c)8/c+8=6/9
6c+48=72
6c=24
c=4
d)d/d+6=4/12
12d =4d+24
12d-4d=24
8d=24
d=3
– 4/a = 6/9
(kali silang)
36=6a
a= 6
– 8/12= b/ b+4
(kali silang)
8b+32= 12b
32= 4b
b= 8
– 6/9= 8/8+c
(kali silang)
48+6c= 72
6c= 24
c=4
– 4/12= d/d+6
4d+24= 12d
24= 8d
d= 3