Question 712759
5b - 8 = 4b + 1 
add 8 to both sides
5b = 4b + 1 = 8
5b = 4b  + 9
subtract 4b from both sides
5b - 4b = 9
b = 9
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Check this in the original equation, replace b with 9:
5(9) - 8 = 4(9) + 1
45 - 8 = 36 + 1