Question 1131844
Try to convert the long description into an equation in one variable, if practical.

<pre>
ITEM                   QUANTITY
Bicycles               3d
Motor Scooters         3*3d-4
Dune Buggies            d
TOTAL                   165
</pre>

{{{3d+9d-4+d=165}}}------solve and find the other two expressions for the table.

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{{{13d=169}}}

{{{d=13}}}, {{{thirteen}}}{{{dune}}}{{{buggies}}}