负1/63除以(3/14减1/3减1/7加2/9)
问题描述:
负1/63除以(3/14减1/3减1/7加2/9)
答
负1/63除以(3/14减1/3减1/7加2/9)
= -1/63÷(3/14-1/3-1/7+2/9)
= -1/63÷【(3/14-1/7)+(2/9-1/3)】
= -1/63÷【1/14-1/9】
= -1/63÷(-5/126)
= 2/5
=5分之2
答
负1/63除以(3/14减1/3减1/7加2/9)
= -1/63÷(3/14-2/14-3/9+2/9)
= -1/63÷(1/14-1/9)
= -1/63÷(-5/126)
=2/5