init({range:[[-3,3],[-3,3]],scale:25}),PIECH=piechart([N1,D-1],["#e00","#999"],2)
init({range:[[-3,3],[-3,3]],scale:25}),piechart([N1-N2,N2,D-1],["#e00","#122","#999"],2)
Resta los numeradores.
init({range:[[-3,3],[-3,3]],scale:25}),piechart([N1-N2,D-1],["#e00","#999"],2)
fraction( N1, D ) - fraction( N2, D ) = fraction( N1 - N2, D )
Simplifica.
init({range:[[-3,3],[-3,3]],scale:25}),piechart([reduce(N1-N2,D)[0],reduce(N1-N2,D)[1]-1],["#e00","#999"],2)
fraction( N1 - N2, D ) = fractionReduce( N1 - N2, D )