199+(84-99) = = = (用递等式计算)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/09 13:58:45
199+(84-99) = = = (用递等式计算)

199+(84-99) = = = (用递等式计算)
199+(84-99) = = = (用递等式计算)

199+(84-99) = = = (用递等式计算)
199+(84-99)
=199-99+84
=100+84
=184