9.72×0.72+0.515×1.2+0.1487×0.28

问题描述:

9.72×0.72+0.515×1.2+0.1487×0.28

任尔,我是诺子……
9.72×0.72+0.515×1.2+0.1487×0.28
=4×(9.72×0.18+0.515×0.3+0.1487×7)
=(接下来你自己算……)