Equações do 1º grau

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Across
  1. 3. x+30 = 40?
  2. 4. 3x-10+13=-2x+28?
  3. 5. 10x-12+10=+18-20 ?
  4. 6. 4.(x + 3) – x = 24 + x
  5. 7. 20x-30=40+30-20?
Down
  1. 1. 20-80+2x=10?
  2. 2. 5x – 3x = 30
  3. 3. 2x – 8 = 3x – 10
  4. 6. 4x - 8 = 6 + 2x
  5. 8. 8x = 5 + 3