Jawabanmu

2014-05-29T13:02:29+07:00
19.D(6,-2)⇒Cy=4⇒D'(6,4×2-(-2))=D'(6,10)
D'(6,10)⇒Cy=x⇒D'(10,6) 

20 ny mungkin pake variabel...
tapi gg dapat....
caraku:
x.2-0=2014
x.2-0+0=2014+0
x.2:2=2014:2
x=107