Question

DAU CORONIȚAAAAAAA!!!

Efectuati:
a) (-13) + (+15) - (-7) + (+10) - (-25);

b) (-26) - (-13) + (+28) - (+55);

c) [(-17) - 0] - [(+2) - (+0)] - {(-2) - [(+14) - 0]};

d)-46 - {-69 + [-57 + (+75) + (-12)] + (-13)} + (+57).

Answer 1

a) (-13)+(+15)-(-7)+(+10)-(-25)
-13+15+7+10+25
2+17+25
44

b) (-26)-(-13)+(+28)-(+55)
-26+13+28-55
-13-27
-40

c) [(-17)-0]-[(+2)-(+0)]-{(-2)-[(+14)-0]}
-17-2+16
-19+16
-3

d) -46-{-69+[-57+(+75)+(-12)]+(-13)}+(+57)
-46-(-69-57+75-12-13)+57
-46-(-126+75-25)+57
-46-(-126+50)-57
-46-(-76)-57
-46+76-57
30-57
-27