Question 1068902
Against current, {{{(10-c)(3/4)=d}}}

Back with the current, {{{(c)(3)=d}}}


{{{(10-c)(3/4)=3c}}}
{{{3(10-c)=4*3c}}}
{{{30-3c=12c}}}
{{{30=15c}}}


{{{highlight(c=2)}}}