你好,很高兴为你解答
1/2-括号3/4-3/5括号除以7/10最后结果等于多少
=1/2-(15/20-12/20)x10/7
=1/2-3/20x10/7
=1/2-3/14
=7/14-3/14
=2/7
满意采纳哦!
1/2-(3/4-3/5)÷7/10
=1/2-(15/20-12/20)x10/7
=1/2-3/20x10/7
=1/2-3/14
=7/14-3/14
=4/14
=2/7
1/2-(3/4-3/5)÷7/10
=1/2-3/20÷7/10
=1/2-3/14
=2/7