Algebra Ecuaciones

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123456
Across
  1. 2. x + 15 = 99
  2. 5. m - 217 = 409
  3. 6. 171 + x = 179
Down
  1. 1. a – 36 = 12
  2. 3. x – 50 = 56
  3. 4. x + 499 = 1570