Question

calculează;5+(-7)-(-4)-(6)=?,-4+(-2)+3-(-5+7-9+1)=?,7-(-13+25+4)-(8+13-25)-(-5-3)=?,13-(5-17)-(3-10-9+12)-(3-18=?,-12-(-14+18-9)-(8-15-5)-(16+5)=?,(7+15-28)+(-15+21)-(13-19)=?,(-8-15+20)-(3+9-7)-9-15+23)=?.

Answer 1

Răspuns:

Explicație pas cu pas:

5+(-7)-(-4)-(6)= 5 - 7 + 4 - 6 = -4

-4+(-2)+3-(-5+7-9+1)= - 4 - 2 + 3 - (-6) = -4 - 2 + 3 + 6 = 3

7-(-13+25+4)-(8+13-25)-(-5-3)= 7 - 16 - (-4) - (-8) = 7 - 16 + 4 + 8 = 3

13-(5-17)-(3-10-9+12)-(3-18= 13 - (-12) - (-4) - (-15) = 13 + 12 + 4 + 15 = 44

-12-(-14+18-9)-(8-15-5)-(16+5)= -12 - (-5) - (-12) - 21 = -12 + 5 + 12 - 21 = -16

(7+15-28)+(-15+21)-(13-19)= -6 + 6 - (-6) = -6 + 6 + 6 = 6

(-8-15+20)-(3+9-7)-9-15+23) = va trebui sa-l rezolvi singur, ultima paranteza care se inchide dupa 23, nu stiu unde se deschide.