Tuesday, August 13, 2013

Solve: 1/4|4x+7|=8x+16

%281%2F4%29abs%284x%2B7%29=8x%2B16 
abs%284x%2B7%29=32x%2B64 
4x%2B7=-%2832x%2B64%29+or+4x%2B7=32x%2B64 
36x=-71 or -28x=57 
x=-71%2F36 or x=-57%2F28 (extraneous!)

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