a middle school took all of its 6th graders on a field trip students filled 660 seats which was 55% if the total number

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smagallanes

29.06.2022

Mathematics

$\huge\boxed{a=-4\ \vee\ a=16}$

Step-by-step explanation:

$|a|=b\iff a=b\ \vee\ a=-b\\\\=======================\\\\|a-6|=10\iff a-6=10\ \vee\ a-6=-10\\\\\text{add 6 to both sides of the equations}\\\\a-6+6=10+6\ \vee\ a-6+6=-10+6\\\\a=16\ \vee\ a=-4$

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