Answer:
500T - 250 =d
Step-by-step explanation:
T= d/500 + 1/2
Subtract 1/2 from each side
T-1/2= d/500 + 1/2-1/2
T -1/2 = d/500
Multiply 500 to each side
500 *(T -1/2) = d/500 *500
