1) - 25+14=-11
2)1×0=0 și - 1×0=0
Valoare minima:
-1+0+1+2+3+4+5+6+7+8=35
Valoare maxima:
0+1+2+3+4+5+6+7+8+9=45
3)(3-17)×(14+50)=
=-14×64=
=-896
(3-17)×(14+50)=
=42+150-238-850=
=896
4)x+(x+1)+(x+2)+(x+3)+(x+4)+(x+5)+(x+6)=-7
7x+21=-7
7x=-7-21
7x=-28
x=-28:7
x=-4
5)4x=x+36
4x-x=36
3x=36
x=36:3
x=12
6)x+7<-3
x<-3-7
x<-10