76Ⅹ298十76Ⅹ3一7等于多少简便?

2025-02-01 10:56:58
推荐回答(2个)
回答1:

76×(298+3)-7
=76×301-7=22876-7=22869

回答2:

76×298+76×3-7
=76×(298+3)-7
=76×301-7
=76×300+76×1-7
=22800+76-7
=22869