A等于12,345×98,765B等于12,344×78,766+A减B等于多少？
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A-B
=12,345×98,765-12,344×78,766
=12,345×98,765-(12,345-1)×78,766
=12,345×(98,765-78,766)+78,766
=12,345×(98,766-1-78,766)+78,766
=12,345×20,000-12,345+78,766
=246900000+66421
=246966421
=12,345×98,765-12,344×78,766
=12,345×98,765-(12,345-1)×78,766
=12,345×(98,765-78,766)+78,766
=12,345×(98,766-1-78,766)+78,766
=12,345×20,000-12,345+78,766
=246900000+66421
=246966421
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