SIMPLIFICATION OF NUMERICAL EXPRESSION

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Across
  1. 2. 4X4÷4+4-4
  2. 4. 20-3X5+6
  3. 5. 108÷12+46-14
  4. 7. IN DMAS A STANDS FOR
Down
  1. 1. 7+7X7÷7-7+7
  2. 2. 8-5+2
  3. 3. 9÷3+6X2
  4. 6. 15-3X2+3