What is the value of #b# when the arithmetic mean of #b-5# and #2b+1# is #b+2?#

1 Answer
EZ as pi
Aug 11, 2016

#b= 8#

Explanation:

The mean of two expressions is given as #b+2#

The mean is found by adding the two expressions together and dividing by 2:

#((b-5)+(2b+1))/2 = b+2" simplify and cross multiply"#

#3b -4 = 2b+4" solve the equation"#

#b= 8#

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