(455×5.45-0.45×2)÷(4.55+545×4.54)怎么算
问题描述:
(455×5.45-0.45×2)÷(4.55+545×4.54)怎么算
答
(455×5.45-0.45×2)÷(4.55+545×4.54)
=(455×5.45-0.9)÷(4.55+5.45×454)
=(455×5.45-0.9)÷(4.55+5.45×455-5.45)
=(455×5.45-0.9)÷(455×5.45-0.9)
=1