840÷[(240-198)x4]怎么简便?

840÷[(240-198)x4]怎么简便?
2025-04-27 05:18:49
推荐回答(2个)
回答1:

840÷[(240-198)×4]
=840÷[42×4]
=840÷42÷4
=20÷4
=5

回答2:

840÷[42x4]
840÷42÷4
20÷4
5