Equations of 1st order

Edit Answers
12345
Across
  1. 3. The symbol x in the equation 2*x=4 is called...
  2. 5. The value which satisfy the equality
Down
  1. 1. Αn equality containing numbers and a symbol
  2. 2. If you double the number and increase by 5 equals 9
  3. 4. The solution of the equation 8:x=2