Je was op zoek naar: subtraction (Engels - Gallicisch)

subtraction
resta

enable subtraction
activar a resta

check this to use subtraction operator.
sinale esta opción para empregar o operador resta.

enable addition/ subtraction for task generation.
activar a suma e a resta para a creación de exercicios.

+ - * /: addition, subtraction, multiplication and division.
+ - * /: sumar, restar, multiplicación e división.

operations which should be used in the task: addition, subtraction, multiplication or division. check all operations you want to use.
as operacións que serán usadas nos exercicios: soma/ resta, multiplicación/ división ou todas as operacións misturadas.

the plus and minus symbols perform addition and subtraction. & eg;, 1+3minus; 2 returns 2.
os símbolos mais e menos son para a soma e a resta. & eg;, 1+3minus; 2 devolve 2.

as well as addition, a formula can make use of the - symbol for subtraction, * for multiplication, and / to perform division. the round bracket symbols (and) can also be used as in normal algebra, so you could enter more complex formulae such as =((b10 + c3) *5 - f11) / 2.
ademais de somas, as fórmulas poden usar o símbolo - para as restas, * para as multiplicacións, e / para as divisións. os parénteses (e) poden ser usados como na álxebra normal, polo que pode usar fórmulas complexas como = ((b10 + c3) * 5 - f11) / 2.