20192020×20202019-20192019×20202020等于多少

2024-12-13 18:07:35
推荐回答(2个)
回答1:

20192020×20202019-20192019×20202020
=20192019x20202019+1x20202019-20192019x20202020
=20202019-20192019x(20202020-20202019)
=20202019-20192019x1
=10000

回答2:


详细步骤如上图所示。