Explicație pas cu pas:
a)-1-2-3-4. c)-(-3)+7-2+(+7)
=-3-3-4. =3+7-2-7
=-6-4. =10-2-7
=-10. =8-7
b )+3-3+5-6-7. =1
=0+5-6-7
=-1-7.
=-8.
d) 9-10+(-9)-(-6)
=-1+(-9)+6
=-10+6
=-4
e)+6+10+9+3
=16+9+3
=25+3
=28
f)-6+6-10+10
=0-10+10
=0
g ) -(-7)-(-6)-(-9)
=7+6+9
=22
h) +33-(-10)+(-1)-(-3)
=33+10+(-1)+3
=43-1+3
=42+3
=45
i)7-2
=5
j)5-8
=-3
k)45-78+59
=-33+59
=26
l)12+6-19+4-5
=18-19+4-5
=-1+4-5
=3-5
=-2
m)6-9-5+12
=-3-5+12
=-8+12
=4
n)12+5
=17
o)4-5-6+8
=-9-6+8
=-15+8
=7
