Question

cat face:1+(-2)+3+(-4)+5+(-6)+7+(-8)+9+(-10) Cu tot cu o mica rezolvare pls

Answer 1

1+(-2)+3+(-4)+5+(-6)+7+(-8)+9+(-10)= (-1)+3+1+1+1-10=(-1)+6-10=5-10=-5

Answer 2

1 + (-2) + 3 + (-4) + 5 +( -6) + 7 + (-8) + 9 + (-10) = -1 -1-1-1-1 = -5
sau = (1+3+5+7+9)-(2+4+6+8+10)= 25 - 30 = -5