Answer:
the answer to this is x=16.1
-4.5 = -0.5(x-7.1)
<=>-4.5 = -0.5x +3.55
<=> 0.5x = 4.5+3.55
<=> 0.5x = 8.05
<=> x = 8.05/0.5
<=> x =16.1
