Question 651109
I am not quite sure on how to do this question, I got 3b+4.  But I am not sure if it is correct... The problem is b-4 over 6 = b over 2. 
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{{{(b-4)/6 = b/2}}}
Cross multiply
2(b-4) = 6b
2b-8 = 6b
-8 = 4b
b = -2