Question

18. Verificati daca:
a) 4+ (-2) + 3-(-5+7-9 + 1) = 3; b)-50 + 14 +(-7)= -43.
c) 40 - (65 - 84) = 60;
d) 17+(-2)-(-4) = 20:
e) 16-(-4)-8-(-9) - 24 =-3;
07- (2-4)= 10
19. Efectuati calculele:
a)-94-17 + 42+(-70+81 - 1);
b)-6--[2+(-8) - 1];
c)77-204 + (245-475)-(41 - 242-156);d) 5 - 12-11-(2)} -6.​

Answer 1

Răspuns:

18 a) F

b) A

c) F

d) F

e) A

f) F

19 a. - 111 +42+10 = - 52

b. - 6 - (-7)= 1

c. - 127 + (-230) - (-357) = 0

d. - 22