Jawabanmu

2014-09-11T21:02:37+07:00
( 1/5 kali 150 ) = 30 -10 = 20
5 di kali 4 = 20 
semoga aja bener :v
2014-09-11T21:13:22+07:00
Yg soal pertama
(1/2x900)-25=25x17
425=425