Question

能简便计算的要用简便计算4/7+1/14-1/2 5/3-3/8-5/8 3/5+3/11+7/5+11 3/4-｛5/6-1/3｝

Answer 1

4/7+1/14-1/2
=4/7-1/2 +1/14
=8/14-7/14+1/14
=(8-7+1)/14
=2/14
=1/7

5/3-3/8-5/8
=5/3-(3/8+5/8)
=5/3-1
=2/3

3/5+3/11+7/5+11 3/4-｛5/6-1/3｝
=3/5+7/5+3/11+11
=2+11+3/11
=13+3/11
=13又311

3/4-｛5/6-1/3｝
=3/4-5/6+1/3
=9/12-10/12+4/12
=(9-10+4)/12
=3/12
=1/4

Answer 2

4/7+1/14-1/2 5/3-3/8-5/8 3/5+3/11+7/5+11 3/4-（5/6-1/3）
=8/14+1/14-7/14 =5/3-（3/8+5/8） =（3/5+7/5）+11+3/11 =3/4-（5/6-2/6）
=2/14 =5/3-1 =2+11+3/11 =3/4-3/6
=2/3 =13又3/11 =3/4-1/2
=3/4-2/4
=1/4

Answer 3

4/7+1/14-1/2
=8/14+1/14-7/14
=2/14
=1/7
5/3-3/8-5/8
=5/3-(3/8+5/8)
=5/3-1
=2/3
3/5+3/11+7/5+11
=(3/5+7/5)+11+3/11
=2+11+2/11
=13又2/11
3/4-｛5/6-1/3｝
=3/4-（5/6-2/6）
=3/4-1/2
=3/4-2/4
=1/4