Question

Calculati: a) 8 - 2x> x
b) 3 ( 2 - x ) + x < 4
c) 2 + x >sau egal - 4
d) -2x + 1 < sau egal 7

Answer 1

a)8-2x>x=>-2x-x>8=>-3x>8|(-1)=3x>-8
b)6-3x+x<4=>-2x=-6+4=>-2x<-2|(-1)=>2x<2
c)2+x>-4=>x>-6
d)-2x+1<7=>-2x>6|(-1)=>2x>-6.sper sa te ajute.