Question 986965
{{{A=2B+3C}}}
Subtract {{{3C}}} from both sides,
{{{A-3C=2B+3C-3C}}}
{{{2B=A-3C}}}
Divide both sides by {{{2}}}.
{{{(2B)/2=(A-3C)/2}}}
{{{highlight(B=(A-3C)/2)}}}