Algebra

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Across
  1. 3. The correct way of writing a x 4 in algebra
  2. 4. two expressions equal to each other
  3. 5. The part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
  4. 6. a mathematical sentence made of variables, numbers and operations
  5. 8. The value of 7x when x=3
Down
  1. 1. a letter used to replace an unknown number
  2. 2. An equation is made of twe expressions separated by an .... sign
  3. 7. the sum of x and 1
  4. 8. The value of 2x+5 when x=100