Jawabanmu

2014-09-10T01:30:58+07:00
 (a-b) (a+b) = 40
4 (a+b) = 40
a+b=10
iya
40:10 =10
40:10 = 4 lah
iya kblik maaf tadi aku mgiranya 40 : 4 maaf
a = 7 , b = 3
2014-09-10T01:31:02+07:00
Az -bz =40
a-b = 4
a+b = ?

caranya: ya 40: 4 =10