Enter equation 1:

a =  b =  c =  d =  e = 

Enter equation 2:

f =  g =  h =  i =  j = 

Enter equation 3:

k =  l =  m =  n =  o = 

Enter equation 4:

p =  q =  r =  s =  t =  <-- Equation 4
The following four unknown practice equations have been generated for you:
4w + 8x + 8y - 20 = -9
16w + 9x - 18y + 7 = 4
19w + 9x + 9y + 17 = 6
15w + 12x + 18y + 19 = 18
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