Question

resolva as inequações, sendo U= a) $x-2\ \textgreater \ 8$ b) $5x-10\ \textless \ 4$ c)$-3x\ \textless \ 2-4x$ d)$-5x \leq 3x-2$ e)$-2x-3\ \textgreater \ 1$ f)$6x-4 \geq 2x-9$

Answer 1

a) x-2>8
x>8+2
x>10

b)5x-10<4
5x<4+10
5x<14
x<14/5

c)-3x<2-4x
-3x+4x<2
x<2

d) -5x<3x-2
-5x-3x<-2
-8x<-2 (-1)
8x<2
x<2/8

e) -2x-3>1
      -2x>1+3
      -2x>4
        -x>4/2
         x>-2

f) 6x-2x>-9+4
    8x>-5
     x>-5/8