A farmer has twice as many pigs as cows, and 4 more cows than goats.  If the farmer has 56 animals total, how many goats does he have?
Let x be the number of goats.
Cows:4+x.
Pigs:2(4+x)=8+2x.
Total:x+4+x+8+2x=56
4x+12=56
4x=44
x=
<gadget id="calculator">11</gadget>
<output>11</output>
11 goats.

<result>11</result>