Question 375990
1.{{{D+N=19}}}
.
.
{{{10D+5N=110}}}
2.{{{2D+N=22}}}
Subtract eq. 1 from eq. 2,
{{{2D+N-D-N=22-19}}}
{{{highlight(D=3)}}}
Then from eq. 1
{{{3+N=19}}}
{{{highlight(N=16)}}}