x除以4······3 x除以5······4 x除以6······5
问题描述:
x除以4······3 x除以5······4 x除以6······5
x除以4······3 x除以5······4 x除以6······5 求x
答
设x÷4=a……3
x÷5=b……4
x÷6=c……5
6c+5=x x÷6余-1
5b+4=x x÷5余-1
4a+3=x x÷4余-1
所以x+1被4,5,6整除
所以4×5×6=120
120-1=119