Question

480减多少等于78.82？

Answer 1

解：480减（ 401.18 ）等于78.82
∵已知480减一个数等于78.82
需求出这个数为多少
∴设这个数为x
480 - x = 78.82
x = 480 - 78.82
x = 48000/100 - （78×100+82）/100
x = 48000/100 - 7882/100
x = 40118/100
x = 20059/50
∴x = 401.18
答：480减401.18等于78.82

Answer 2

用480减78.82就可以得到，480-78.82=401.18，所以480减401.18等于78.82。

Answer 3

480-78.82=401.18
480-401.18=78.82

Answer 4

401.12

Answer 5

n=480-78.82=401.22