Answer
$x=3$
Work Step by Step
3 people went bowling.The shoe rental is $2.50$ whereas the cost per game is $5.30$.
We know that $ 55.20$ was spent in total. Thus;
$3\times5.3(x)+3(2.5)=55.2$ (simplify)
$15.9x+6.5=55.2$ (multiply both sides by 10 so it can be easier to solve)
$159x+75=552$ (subtract 75 from both sides)
$159x=477$ (divide both sides by 159 to isolate the variable)
$x=3$
Thus, 3 games were played.
