Question

calcule as inequações a)3x-3>12 b) 5x> -x+36 c)x/3>10 d)6x <12

Answer 1

a)3x - 3 > 12
   3x > 12 + 3
   3x > 15
     x > 15/3
     x > 5

b) 5x > -x + 36
    5x > -x + 36
    5x + x > 36
          6x > 36
            x > 36/6
            x >  6
           
c)  x/3 > 10
     x > 10 . 3
     x > 30


d) 6x <12
      x < 12/6
      x < 2