f=8 or f=2
Work Step by Step
4|f−5|=12⟶ divide each side by 4 4|f−5|÷4=12÷4⟶ divide |f−5|=3⟶ definition of absolute value f−5=3 OR f−5=−3⟶ add 5 to all parts f−5+5=3+5 OR f−5+5=−3+5⟶ add f=8 OR f=2
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