Question

计算,能简算的要简算.2/3+3/5+5/6 10-4/13-9/13 6/7-3/8+1/8 3.92/{1.75*（

Answer 1

2/3+3/5+5/6

=40/60+36/60+50/60

=126/60

=2又1/10

10-4/13-9/13

=10-(4/13+9/13)

=10-1

=9

6/7-3/8+1/8

=9/7-(3/8-1/8)

=9/7-1/4

=36/28-7/28

=1又1/28

3.92/{1.75*（5.19-3.59）}

=3.92/(1.75*1.6)

=3.92/2.8

=1又2/5