Question

ajutor dau 30 puncte
-10+(-7)+(+10)+(-5)
-11+(-4)+(-8)+21
-13+(+9)+(-4)+(-9)
7-11+14
0-(+5)
-3-(-6)
+6-(+12)
ajutor dau 30 puncte

Answer 1

1 ) -10 + ( -7 ) + ( +10 ) + ( -5 ) =

= -7 -5

= -12

2 ) -11 + ( -4 ) + ( -8 ) + 21 =

= -11 - 4 - 8 + 21

= -15 - 8 + 21

= -23 + 21

= -2

3 ) -13 + ( +9 ) + ( -4 ) + ( -9 ) =

= -13 - 4

= -17

4 ) 7 - 11 + 14 =

= -4 + 14

= 10

5 ) 0 - ( +5 ) = -5

6 ) -3 - ( -6 ) =

= -3 + 6

= 3

7 ) +6 - ( +12 ) =

= - ( 12 - 6 )

= -6