Question

Tolong dijawab yah nomor 18 sama 19 pakai caranya dan jangan ngasal

Answer 1

1/3 (x - 4) > 1/2(2x - 8)

1/3x - 4/3 > x - 4
x - 4 > 3x - 12
-2x > -8
2x < 8
x < 4

hp {0,1,2,3}

==========

1/2 (x - 3) < 3 + 4/5x
1/2x - 3/2 < 3 + 4/5x
5/2 x - 15/2 < 15 + 4x
5x - 15 < 30 + 8x
-3x < 45
3x > -45
x > -15

Answer 2

8.
1/3(x-4) > 1/2(2x-8)...> kali silang
2(x-4) > 3(2x-8)
2x -8 > 6x-24
-8+ 24 > 4x
16 > 4x
x < 4 
karena bil.cacah dimulai dari 0
(0,1,2,3)  c

9.
1/2(x-3) < 3 + 4/5x
x-3 < 6 + 8/5x
-3-6 < 8/5x - 5/5x
-9 < -3/5x
-9 x 5/3 < x
-15< x
x> -15....B