13.5减括号零点24×2点7+7-3括回怎么做简便运算?

2025-02-25 14:32:23
推荐回答(1个)
回答1:

13.5-(0.24x2.7+7-3)
=13.5-4-0.24x(3-0.3)
=9.5-0.72+0.072
=8.78+0.072
=8.852