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Rezolvati in Z , ecuatiile: a) 2(x+3)-x<4-5x, b) -x>4(3x-2)-5x+7,c)3(x-2)-5(x+4)<-8+x=? d)302x-4(x-5)>-1+3x

Răspuns :

Aníșkaask
a) 2x+6-x<4-5x
X+5x<4-6
6x<-2
x<-1/3
b) -x>4(3x-2)-5x+7
-x-12x+5x > 7-8
-8x>-1|*(-1)
8x<1
c) 3(x-2)-5(x+4)<-8+x
3x-5x-x<-6-20-8
-3x<-34
X>34/3
d) 302x-4(x-5)>-1+3x
302x-4x-3x>-20-1
295x>-21