Answer
2010: $77,333,311$
2012: $96,666,667$
2014: $116,000,022$
Work Step by Step
$(2x-21)+(\frac{5}{2}x+2)+(3x+24)=290,000,000$
$\frac{15}{2}x+5=290000000$
$\frac{15}{2}x=289,999,995$
$x=38,666,666$
2010: $2x-21$
$77,333,331$
2012: $\frac{5}{2}(38666666)+2$
$96,666,667$
2014:
$3(38666666)+24$
$116,000,022$
