Algebra

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Across
  1. 6. What is the operation used in 3y?
Down
  1. 1. The branch of mathematics in which we study numbers
  2. 2. they can take different values
  3. 3. Which operation will we use to find the answer of 7 added to a (variable)
  4. 4. is derived from the title of the book
  5. 5. If 5 matchsticks are required to make 1 pentagon, then how many matchsticks are required to make n pentagons?
  6. 7. What is the expression of 14 subtracted from p ?