(435+47×15-320)×4简便运算

2025-02-26 20:56:13
推荐回答(1个)
回答1:

(435+47×15-320)×4
=(435+705-320)×4
=435×4+705×4-320×4
=1740+1820-1280
=3560-1280
=2280