Answer:
31
Step-by-step explanation:
basically the easiest way to do that is to remember that a flat line is equal to 180 degrees, it gave you 149, so all you gotta do is 180-149
<span>(b+3)/7=(b-3)/6
6(b+3) = 7 (b-3)....> cross multiply
6b + 18 = 7b -21 ...>distributive property
6b - 7b = -21 -18 ...>subtract 7b to both sides then simplify
-b = -39 ...> multiply -1 to both sides
b = 39</span>
Answer:
Step-by-step explanation:
