Question

2. Calculati: a) -21-17-21+15-43+15 b) +21-20+21-15+32-17= c) +32-15-21+17-15- d) -21-32+21+37-15-15-​

Answer 1

Răspuns:

a) 72

b) 22

c) - 2

d) - 25

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