Question 931727
Translate to math equations.
{{{2O+3B+4A=15}}}
{{{3O+2B+A=10}}}
Add the equations together.
{{{5O+5B+5A=25}}}
{{{O+B+A=5}}}
Then multiply by {{{3}}}
{{{3O+3B+3A=highlight(15)}}}