$\snippet{name: op_column, sign: '+', x: 56, y: 39, z: 95}$
 
$\snippet{name: op_column, sign: '-', x: 82, y: 28, z: 54}$
 
$\snippet{name: op_column, sign: '+', x: 49, y: 44, z: 93}$
 
$\snippet{name: op_column, sign: '-', x: 61, y: 49, z: 12}$
 
$\snippet{name: op_column, sign: '+', x: 19, y: 74, z: 93}$
 
$\snippet{name: op_column, sign: '+', x: 47, y: 13, z: 60}$
 
90 − 73 + 8 = 17 + 8 = 25;
$\snippet{name: op_column, sign: '-', x: 90, y: 73, z: 17}$
 
$\snippet{name: op_column, sign: '+', x: 17, y: 8, z: 25}$
 
34 + 36 − 9 = 70 − 9 = 61;
$\snippet{name: op_column, sign: '+', x: 34, y: 36, z: 70}$
 
$\snippet{name: op_column, sign: '-', x: 70, y: 9, z: 61}$
 
84 − 58 − 7 = 26 − 7 = 19;
$\snippet{name: op_column, sign: '-', x: 84, y: 57, z: 26}$
 
$\snippet{name: op_column, sign: '-', x: 26, y: 7, z: 19}$
 
93 − (46 + 9) = 93 − 55 = 38;
$\snippet{name: op_column, sign: '+', x: 46, y: 9, z: 55}$
 
$\snippet{name: op_column, sign: '-', x: 93, y: 55, z: 38}$
 
(28 + 33) − 8 = 61 − 8 = 53;
$\snippet{name: op_column, sign: '+', x: 28, y: 33, z: 61}$
 
$\snippet{name: op_column, sign: '-', x: 61, y: 8, z: 53}$
 
54 − (42 − 7) = 54 − 35 = 19.
$\snippet{name: op_column, sign: '-', x: 42, y: 7, z: 35}$
 
$\snippet{name: op_column, sign: '-', x: 54, y: 35, z: 19}$