问题描述:
4/7:2.1.
最佳答案:
解法一:
4/7:2.1
=4÷7÷2.1
=4÷(7x2.1)
=4÷14.7
=40÷147
=40:147
解法二:
4/7:2.1
=(4/7×70):(2.1×70)
=40:147
解法三:
4/7:2.1
=4/7:21/10
=40:147
4/7:2.1先化简,再求比值。
问题描述:
4/7:2.1.
解法一:
4/7:2.1
=4÷7÷2.1
=4÷(7x2.1)
=4÷14.7
=40÷147
=40:147
解法二:
4/7:2.1
=(4/7×70):(2.1×70)
=40:147
解法三:
4/7:2.1
=4/7:21/10
=40:147