62×73-63×63简便率
第1个回答 2018-01-07
62×73-63×63简便
=62×73-(62x63+63)
=62×73-62x63-63
=62x(73-63)-63
=62x10-63
=620-63
=557
=62×73-(62x63+63)
=62×73-62x63-63
=62x(73-63)-63
=62x10-63
=620-63
=557
第2个回答 2018-01-07
62×73-63×63简便率
62×73-63×63
=73*63-73-63*63
=63*(73-63)-73
=630-73
=557本回答被网友采纳
62×73-63×63
=73*63-73-63*63
=63*(73-63)-73
=630-73
=557本回答被网友采纳
第3个回答 2018-01-07
557
