Walid is four times as old as Sami . Five years ago,
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Knowing that logarithm functions and exponential functions are inverse to each other, the procees to convert a logarithmic equation to its equivalent is to perform all the operations to set an equation of the typ:
,
then invert to show it equivalent form:
.
With that you have solved the equation for x.
then invert to show it equivalent form:
With that you have solved the equation for x.