Question

4. Calculaţi:
a) -9+ |-31 +5;
d) -15 + 1–7 + 121;
b) /+31 + (-7) + 4);
e) --3+ 4+81 + 1-3 + 51;​

Answer 1

Răspuns:

a) -9+ |-31 +5=-9-3+5=-12+5=-7

d) -15 + 1–7 + 121=-14-7+121=-21+121=100

b) /+31 + (-7) + 4)=31-7-4=31-11=20

e) --3+ 4+81 + 1-3 + 51=

=1+81-2+51=

=82-2+51=

=80+51=

=131