4+4 per 5 x=1per2(x-4) tentukan x-5

4 + 4/5x = ½(x-4)
kedua ruas kalikan 10
maka
40 + 8x = 5(x-4)
40+8x = 5x-20
8x-5x=-20-40
3x = -60
x=-20

x-5=-20-5=-25

4 + 4/5x = 1/2(x - 4)
4 + 4/5x = 1/2x - 2 (×10)
40 + 8x = 5x - 20
8x - 5x = -20 - 40
3x = -60
x = -20

x - 5
-20 - 5
-25