-8(3c +1/16) +(8,5-2,1x)/4,7=-8(3·2/3 +1/16) +85/47 -(21x)/47=-16 -1/2 +1 38/47 -(21x)/47=-(21x)/47 -16 47/94 +1 76/94=-(21x)/47 -15 141/94 +1 76/94=-(21x)/47 -14 65/94=-(21x)/47 -1381/94
-8(3c +1/16) +(8,5-2,1x)/4,7=-8(3·2/3 +1/16) +85/47 -(21x)/47=-16 -1/2 +1 38/47 -(21x)/47=-(21x)/47 -16 47/94 +1 76/94=-(21x)/47 -15 141/94 +1 76/94=-(21x)/47 -14 65/94=-(21x)/47 -1381/94