Răspuns :
Răspuns:
c) x+17=0=>x=0-17=-17
d) x+7=2=>x=2-7=-5
e) x-14=28=>x=28+14=42
f) x+(-7)=9=>x=9+7=16
g) x+(-9)=11=>x=11+9=20
i) -14+x=6=>x=6+14=20
c)x=0-17
x= -17
d)x=2-7
x= -5
e)x=28+14
x=42
f)x=9+7
x=16
g)x=11+9
x=20
h)x=-8+6
x=-2
i)x=6+14
x=20