Plz ! plz include word explanations so i get ! : )
a) 2x=3/4
b) m/3= -2/5
c) -2 1/2 x = -3 1/2

A)2x=3/4
    so two things you can do 
     i. 4(2x)=3
         8x=3
         x=3/8
PS: this is easier
     ii. x=(3/4)/2
          x=3/4/2/1
          x=3/8
b) m/3=-2/5
   again two ways
    i. 5(m/3)=-2
         5m/3=-2
         5m=-2×3
         5m=-6
         m=-6/5
    ii. m=3(-2/5) remember multiply the number to only the numerator
          m=-6/5
c) -2 1/2x=-3 1/2
       make it easier, make it into fractions
    -2 1/2= -2×2+1= -5/2
    -3 1/2= -3×2+1= -7/2
 -5/2x=-7/2
 -5x/2=-7/2
-5x=2(-7/2)
  -5x=-14/2
  -5x=-7
  x=-7/-5
  x=7/5
      

The coordinates of point a right now is (-3,-1) you have to multiply these coordinates by a factor of 2 to get (-6,-2)