Ответ:

  1. \(1,7x=0,68\), \(x=0,4\).
  2. \(8,2x=4,1\), \(x=0,5\).
  3. \(x=0,336+0,44=0,776\).
  4. \(1,8x=0,45\), \(x=0,25\).
  5. \(4,2x=1,26\), \(x=0,3\).
  6. \(4,3m=2,58\), \(m=0,6\).