• A + D = B
  • B + D = C
  • C + D = E

Solve

  • A + B = C
  • B + E = A
  • B + C = D

Solve

  • B + E = D + 5
  • C + D = E + 2
  • B + C = E + 3

Solve

  • B + C = A + 4
  • B + D = A + 1

Solve

  • E = C + 3
  • E = A + 4
  • B = A + 2

Solve

  • E = A + 4
  • C = A + 1
  • D = C + 1

Solve

  • B = 4D
  • 2D = A
  • 3A = 2E

Solve

  • 4D = 2A
  • E = 3C

Solve

  • 3E = C
  • 2D = B

Solve

  • 4A = 3D
  • 4B = 2D
  • D = 4C

Solve

  • D + E = A + B
  • C + D = A + E
  • A ≠ 5
  • A ≠ 1
  • B + E = A + C
  • A ≠ 4

Solve

  • C + E = A + B
  • C + D = B + E
  • E ≠ 2
  • A ≠ 5
  • E ≠ 4

Solve

  • 2B = A + C
  • D > B
  • 2E = C + D

Solve

  • 2E = B + D
  • 2C = D + E
  • A > E

Solve

  • A + E ≤ 4
  • C + E = A
  • A + C = D

Solve

  • D + E = B
  • B + D = A
  • A + E ≤ 6
  • C + E = A

Solve

  • B + C + D = 8
  • C + E = 3
  • B + C = 5

Solve

  • A + D = 5
  • B + D = 8
  • B + C = 9

Solve

  • if C > 1 then A > 3
  • if B + E ≤ 3 then A + D ≤ 6
  • if A ≥ 1 then E ≥ 2
  • if A + E ≤ 9 then B + D ≤ 4
  • if B + D ≤ 3 then A + E ≤ 6
  • if D + E ≤ 5 then B ≥ 4
  • if C ≠ 1 then B + E ≤ 6
  • if C + D ≤ 5 then B + E ≤ 5

Solve

  • if B + E ≤ 9 then C + D ≤ 3
  • if D + E ≤ 6 then A + B ≤ 7
  • if A + C ≤ 5 then D + E ≤ 3

Solve

  • C ≥ 1 if and only if B + D ≤ 3
  • C < 2 if and only if D > 1
  • D + E ≤ 3 if and only if B + C ≤ 5
  • A < 4 if and only if B + D ≤ 4
  • B + D ≤ 6 if and only if E ≠ 5

Solve

  • A + B ≤ 7 if and only if C < 1
  • A + C ≤ 7 if and only if D + E ≤ 8
  • A + E ≤ 7 if and only if C + D ≤ 4
  • E > 2 if and only if C ≥ 2
  • E ≤ 4 if and only if C + D ≤ 3
  • A + D ≤ 4 if and only if B + E ≤ 4

Solve

  • D + E = A
  • 2E = B
  • 2B = A

Solve

  • D = BB
  • AD = D
  • E > 3

Solve

  • AD + B + CD = C + E
  • A > BD

Solve

  • C = A + B
  • D = A + C
  • B + E = AC + D

Solve

  • C = A + E
  • E = B + 2
  • if BE + 3E ≠ B then AA + D > E

Solve

  • A = CC
  • C + D = 5
  • B + C = D

Solve

5

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