Jawabanmu

2014-01-29T21:17:19+07:00
3(x+2)+5+2(x+15)
3x + 6 + 5 = 2x + 30
3x - 2x = 30 - 6 - 5
x = 30 -11
x = 19

(x+2) = ...
(19+2) = 21
2014-01-29T22:30:02+07:00
3(x+2)+5=2(x+15)
3x+6+5=2x+30
3x-2x=30-6-5
x=19
jadi nilai (x+2)=(19+2)=21