Jawabanmu

2014-02-27T23:23:42+07:00
A) 1/2 x + 5 > 15 (dikali 2) x + 10 > 30 x > 20 b) -2 + x >= -22 x >= -20 c) 2/3 p + 4 <= 8 ( dikali 3) 2 p + 12 <= 24 ( dibagi 2 ) p + 6 <= 12 p<=6 d) 2x -4> 3x +9 2x - 3x > 9+ 4 -x > 13 x < -13 ( tanda berubah ) e) 2y - 7 / 2 <= 3 ( dikali 2 ) 2y - 7 <= 6 2y <= 13 y <= 13/2