Question

3-10/21×3/2-2/7 4/3÷（2/3-2/5）×3/5 快一点要有过程，有悬

Answer 1

3-10/21×3/2-2/7

=3-5/7-2/7

=3-1

=2

4/3÷（2/3-2/5）×3/5

=4/3÷（10/15-4/15）×3/5

=4/3÷6/15x3/5

=4/3x15/6x3/5

=2

亲，请【采纳答案】，你的采纳是我答题的动力，谢谢。