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a) | 3+4+(-5) | =2
b) | 2+(-3)+(-1) | =-2
c) |6+(-5)+(-5) | =-4
d) |(-2)+5+(-6)+(-1) | =-4
Zd.10
a) |3+4| = 7
|3+(-4) | = -1
|(-3) + 4 | =1
| (-3) + (-4)| = -7
b)| 2+7 | =9
| 2 + (-7) | =-5
| (-2) + 7 | =5
| (-2) + (-7) | =-9
c)| 2 + 6 | =8
| 2+ (-6) | =-4
| (-2) + 6 | =4
| -(3) + (-6) | =-9
d)|3+5| =8
| 3+(-5)| =-2
| (-3) + 5 | =2
| (-3) + (-5) | =-8