x + 1,3 = 3,91
x = 3,91 − 1,3
x = 2,61
 
$\snippet{name: op_column, sign: '-', x: '3,91', y: '1,30', z: '2,61'}$

2,7 + x = 5,87
x = 5,87 − 2,7
x = 3,17
 
$\snippet{name: op_column, sign: '-', x: '5,87', y: '2,70', z: '3,17'}$

x + 2,4 = 10
x = 10 − 2,4
x = 7,6
 
$\snippet{name: op_column, sign: '-', x: '10,0', y: '2,4', z: '7,6'}$

9,5 + x = 36
x = 36 − 9,5
x = 26,5
 
$\snippet{name: op_column, sign: '-', x: '36,0', y: '9,5', z: '26,5'}$

5,8 − x = 4,2
x = 5,8 − 4,2
x = 1,6
 
$\snippet{name: op_column, sign: '-', x: '5,8', y: '4,2', z: '1,6'}$

x − 3,6 = 7,4
x = 7,4 + 3,6
x = 11
 
$\snippet{name: op_column, sign: '+', x: '7,4', y: '3,6', z: '11,0'}$

25 − x = 5,7
x = 25 − 5,7
x = 19,3
 
$\snippet{name: op_column, sign: '-', x: '25,0', y: '5,7', z: '19,3'}$

x − 12,5 = 8,6
x = 8,6 + 12,5
x = 21,1
 
$\snippet{name: op_column, sign: '+', x: '8,6', y: '12,5', z: '21,1'}$