Exercice d'application 1

Question

Calculer \(A= (-11)+(-14)-(+31)-(-21)+(+30)\)

Solution

Calculons \(A\) :

\(\begin{eqnarray*}A&=& (-11)+(-14)-(+31)-(-21)+(+30)\\&=& -11-14-31+21+30\\&=& -56+51\\&=&-5\end{eqnarray*}\)