Answer:
5
Explanation:
because we would do this:
b + 8 = 13
then we subtract 13 - 8 because we are doing inverse operations.
b = 5
Hope this helped!
b + 8 =13
Move 8 to the other side
Sign changes from +8 to -8
b+8-8=13-8
b=5
Answer : b=5
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