Question 990886
SOLVING A SYSTEM OF EQUATIONS:
J= Bon Jovi's ticket sales
S= Bruce Springsteen's ticket sales
"Together generating $415.3 million in ticket sales" translates as
{{{J + S = 415.3}}} 
"Bruce Springsteen took in $6.1 million less than Bon Jovi" translates as
{{{S = J - 6.1}}}
You could say that you have the system of linear equations {{{system(J + S = 415.3,S = J - 6.1)}}}
Substituting the expression {{{J - 6.1}}} for {{{S}}}
into the equation {{{J + S = 415.3}}} , we get
{{{J + J - 6.1 = 415.3}}} ---> {{{2J-6.1 = 415.3}}} ---> {{{2J = 415.3+6.1}}} ---> {{{2J = 421.4}}} ---> {{{J = 421.4/2}}} ---> {{{highlight(J = 210.7)}}} .
Then, {{{S = 210.7 - 6.1}}} ---> {{{highlight(S = 204.6)}}}= Bruce Springsteen's ticket sales (in millions).


NOT EVEN MENTIONING A SYSTEM OF EQUATIONS:
{{{J}}}= Bon Jovi's ticket sales (in millions)
{{{J-6.1}}}= Bruce Springsteen's ticket sales (in millions), because "Bruce Springsteen took in $6.1 million less than Bon Jovi".
"Together generating $415.3 million in ticket sales" translates as
{{{J + J-6.1 = 415.3}}} ---> {{{2J-6.1 = 415.3}}} ---> {{{2J = 415.3+6.1}}} ---> {{{2J = 421.4}}} ---> {{{J = 421.4/2}}} ---> {{{highlight(J = 210.7)}}} .
Then, {{{J - 6.1 = 210.7 - 6.1}}} ---> {{{highlight(J-6.1 = 204.6)}}}= Bruce Springsteen's ticket sales (in millions).