[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] : 35 / 1 + 4 / 7 = 1
[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] : 35 / 1 = 1 - 4 / 7
[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] : 35 / 1 = 7 / 7 - 4 / 7
[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] : 35 / 1 = 3 / 7
[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] = 3 / 7 × 35 / 1
[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] = 105 / 7
[ ( A + 1 / 3 ) × 3 / 47 - 1 / 2 ] = 15
( A + 1 / 3 ) × 3 / 47 = 15 / 1 + 1 / 2
( A + 1 / 3 ) × 3 / 47 = 30 / 2 + 1 / 2
( A + 1 / 3 ) × 3 / 47 = 31 / 2
A + 1 / 3 = 31 / 2 : 3 / 47
A + 1 / 3 = 31 / 2 × 47 / 3
A + 1 / 3 = 1457 / 6
A = 1457 / 6 - 1 / 3
A = 1457 / 6 - 2 / 6
A = 1455 / 6 = 485 / 2