13-28/3等于几

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13-28/3等于几13-28/3等于几13-28/3等于几KJ9806:17/30÷(3/5+2×1/8)=17/30÷(3/5+1/4)=17/30÷(12/20+5/20)=17/30÷17/2

13-28/3等于几
13-28/3等于几

13-28/3等于几
KJ9806:
17/30÷(3/5+2×1/8)
=17/30÷(3/5+1/4)
=17/30÷(12/20+5/20)
=17/30÷17/20
=17/30×20/17
=20/30
=2/3
祝好,再见.

13-28/3
=39/3-28/3
=11/3
=3又2/3
≈3.667

13-28/3=11/3