Linear equation

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Across
  1. 6. any term of an equation may be taken to the other side by the changing of sine without affecting the equality this process is known as
  2. 8. number not having fixed value
  3. 9. number having a fixed value
  4. 10. if this happens the number flip's(the up one goes down and the down one goes up)
  5. 11. it is represented by √
Down
  1. 1. it's done to check the answer
  2. 2. it is the power of a number
  3. 3. it is also known as the lowest form
  4. 4. If the HCF of 4&7 is multiplied by the LCM of 7&3 and then is added to 6^2 the value is(answer in words)
  5. 5. find the value of x in X+7/y+2=3/4 if y=2x (answer in words like.nine/two)
  6. 7. it is number having a power