11.3×[15%+85%(1-43%)]+0.56=7.11.3×[15%+85%(1-43%)]+0.56=7.46希望您说的越详细越好
问题描述:
11.3×[15%+85%(1-43%)]+0.56=7.
11.3×[15%+85%(1-43%)]+0.56=7.46
希望您说的越详细越好
答
11.3×[15%+85%(1-43%)]+0.56=7.46=11.3×[0.15+0.85×(1-0.43)]+0.56=11.3×[0.15+0.85×0.57]+0.56=11.3×[0.15+0.4845]+0.56=11.3×0.6345+0.56=7.16985+0.56=7.72985