55-19+45-19等于多少用简便方法计算?

2025-12-15 01:53:01
推荐回答(2个)
回答1:

55-19+45-19
=55+45-(19+19)
=100-38
=62
愿对你有帮助

回答2:

55-19+45-19 简便方法计算
=55+45-(19+19)
=100-38
=62