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Proof step 21 from proof mult-eq-same (previous step)

i * i3 * 10 ^ abs(i2) * 10 ^ abs(i4) = i1 * i3 * 10 ^ abs(i0) * 10 ^ abs(i4) ⊦ mkDecimal(i3, i4) = mkDecimal(0, 0), mkDecimal(i, i0) = mkDecimal(i1, i2)

User applied rule cut formula

And obtained the following new goals

Proof step 22:
i3 = 0, i * i3 * 10 ^ abs(i2) * 10 ^ abs(i4) = i1 * i3 * 10 ^ abs(i0) * 10 ^ abs(i4) ⊦ mkDecimal(i3, i4) = mkDecimal(0, 0), mkDecimal(i, i0) = mkDecimal(i1, i2)
Proof step 25:
i * i3 * 10 ^ abs(i2) * 10 ^ abs(i4) = i1 * i3 * 10 ^ abs(i0) * 10 ^ abs(i4) ⊦ i3 = 0, mkDecimal(i3, i4) = mkDecimal(0, 0), mkDecimal(i, i0) = mkDecimal(i1, i2)

Rule argument

fma: i3 = 0

Additional information

Used formulas: i3 = 0