Caranya gimana ni? Tolong dong! Secepatnya yaa

6 cm per 8 cm = x cm per x+4 cm
3/4 = x/x+4
3(x+4) = 4x
3x + 12 = 4x
x = 12

6/8 = x/4 + x 8 (x) = 6(4 + x) 8x = 24 + 6x 8x - 6x = 24 2x = 24 x = 24/2 x = 12