Question 261403
Let {{{d}}} = number of Democrats
Let {{{r}}} = number of Republicans
given:
(1) {{{r + d = 99}}}
(2) {{{r = d + 11}}}
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From (2)
(2) {{{r - d = 11}}}
Add (1) and (2)
{{{r + d = 99}}}
{{{r - d = 11}}}
{{{2r = 110}}}
{{{r = 55}}}
And, since
{{{r + d = 99}}}
{{{55 + d = 99}}}
{{{d = 44}}}
There are 44 Democrats and 55 Republicans