D could be at 20 or at -6.
Since C is located at 7, add and subtract 13 in order to get the two locations.
Answer:
x=24
Step-by-step explanation:
8x + 4(4x - 3) = 4(6x + 4) - 4
8x + 16x - 12 = 24x + 16 - 4
24x - 12 = 24x + 12
24x = 24x + 12 + 12
24x = 24x + 24
24x/24x = 24
x = 24
One and 3/20 can't be simplified