51-[26.5×0.375-(8.3-737/40)+A÷22/3]×4/45=50,A=_.

问题描述:

51-[26.5×0.375-(8.3-7

37
40
)+A÷2
2
3
4
45
=50,A=______.

51-[26.5×0.375-(8.3-73740)+A÷223]×445=50,[9.9375-8.3+7.925)+A×38]×445=1,[9.5625+A×38]×445=1,[9.5625+A×38]×445×454=1×454,9.5625+A×38=454,A×38=11.25-9.5625,A×0.375=1.6875,A=4.5....