(pleasee help!!) Which expression uses the associative property to make it easier to evaluate

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callie2411

26.07.2021

Mathematics

Let's make two simultaneous equations and solve. Let's call the smaller number s, and the larger number l
$l=3s-1\\l+s=63\\\text{now solve this, and find l and s}\\\text{modifying the second equation}\\l=63-s\\\text{plugging this into the first equation}\\63-s=3s-1\\\text{solve for s}\\64=4s\\s=16\\\text{plug this into the second equation from the original two}\\l+16=63\\\text{solve for l}\\l=47\\\text{gather the answers. The answers are: the larger number is 47, and the smaller number is 16.}$

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