初一数学上册-2/3+(-1/6)-(-1/4)-1/2=
2019-04-21
初一数学上册-2/3+(-1/6)-(-1/4)-1/2=
优质解答
先通分：-2/3+(-1/6)-(-1/4)-1/2=-8/12+（-2/12）-(-3/12)-6/12
提取负号：=-8/12-2/12+3/12-6/12
=(-8-2+3-6)/12=-13/12
先通分：-2/3+(-1/6)-(-1/4)-1/2=-8/12+（-2/12）-(-3/12)-6/12
提取负号：=-8/12-2/12+3/12-6/12
=(-8-2+3-6)/12=-13/12