CAN SOMEONE PLZ HELP ME!!!!???

Answer:
v(t2-t1) +d1= d2
Step-by-step explanation:
v = (d2-d1) / (t2-t1)
Multiply each side by (t2-t1)
v (t2-t1) = (d2-d1) / (t2-t1) * (t2-t1)
v(t2-t1) = d2-d1
Add d1 to each side
v(t2-t1) +d1= d2-d1+d1
v(t2-t1) +d1= d2