51.2x8.1+11x9.25+537x0.
问题描述:
51.2x8.1+11x9.25+537x0.
答
51.2x8.1+11x9.25+537x0.19
= 414.72 + 101.75+ 102.3
= 516.47 + 102.3
= 618.77