Respuesta :

This is how you solve the three questions. hope this helps.
Ver imagen isa02207
31.  1.8C + 32 = F
        1.8C = F - 32
        C = (F-32)/1.8

32.  2(w-l) = P
        w-l = (P/2)
        w = (P/2) - l

33.  ax+b=c
      ax = c-b
      x = (c-b)/a