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Please answer this:2+6 =



Original Message (ID '468549') By Bill Simpson:
You had one = which should have been ==. That is bad. Then pick any seven variables. In[1]:= Reduce[{4 a + 6 b + 6 c == 3 && 5 d + 2 e + 9 f == 14 && 2 d + 13 g + 5 h == 11 && 7 b + 4 d + 2 g == 19 && 5 c + 2 d + 7 i == 23 && 8 i + 4 j + 11 k == 21 && 2 l + 3 m + 4 n == -2 && 4 l + 7 o + 9 p == 29 && 11 j + 4 m + 2 o == 9 && 3 e + 2 n + 4 q == 13 && 6 d + 21 o + 9 s == 21 && 2 q + 7 r + 8 s == 32 && 5 t + 3 u + 7 v == 1 && 3 t + 8 w + 2 x == 23 && 4 r + 2 o + 7 u == 13 && 2 d + 5 j + 8 x == 23 && 2 a + 8 r + 3 w == 22}, {a, b, c, d, e, f, g}] Out[1]= u == -112/9 - (7*v)/3 + (40*w)/9 + (10*x)/9 && t == 23/3 - (8*w)/3 - (2*x)/3 && q == 16 - (7*r)/2 - 4*s && o == 901/18 - 2*r + (49*v)/6 - (140*w)/9 - (35*x)/9 && n == 59873/288 + (9*p)/8 - (331*r)/40 + (99*s)/80 + (16219*v)/480 - (2317*w)/36 - (13961*x)/720 && m == -5383/24 + (87*r)/10 - (33*s)/20 - (1421*v)/40 + (203*w)/3 + (1279*x)/60 && l == -5785/72 - (9*p)/4 + (7*r)/2 - (343*v)/24 + (245*w)/9 + (245*x)/36 && j == 1319/18 - (14*r)/5 + (3*s)/5 + (343*v)/30 - (196*w)/9 - (317*x)/45 && i == -2449/72 - (11*k)/8 + (7*r)/5 - (3*s)/10 - (343*v)/60 + (98*w)/9 + (317*x)/90 && h == -7232333/3600 - (7007*k)/400 + (75887*r)/750 - (8241*s)/500 - (942221*v)/3000 + (273301*w)/450 + (718879*x)/4500 && a == 11 - 4*r - (3*w)/2 && b == -45983/360 - (77*k)/40 + (557*r)/75 - (51*s)/50 - (5831*v)/300 + (1711*w)/45 + (4669*x)/450 && c == 43523/360 + (77*k)/40 - (119*r)/25 + (51*s)/50 + (5831*v)/300 - (1666*w)/45 - (4669*x)/450 && d == -6181/36 + 7*r - (3*s)/2 - (343*v)/12 + (490*w)/9 + (245*x)/18 && e == -67217/432 - (3*p)/4 + (611*r)/60 + (541*s)/120 - (16219*v)/720 + (2317*w)/54 + (13961*x)/1080 && f == 255671/1944 + p/6 - (1661*r)/270 - (91*s)/540 + (67669*v)/3240 - (9667*w)/243 - (50711*x)/4860 && g == 191987/240 + (539*k)/80 - (5999*r)/150 + (657*s)/100 + (25039*v)/200 - (7259*w)/30 - (19061*x)/300