Question

中括号7/10÷括号5/3×0.9+1/4括号乘以18块2÷3/5的结果是多少

1+(1/3-1/4)×1/2 580÷｛185-（5＋ 170）｝ 的运算顺序.
3/5-3/5×5/7+2/7的计算结果是( )

Answer 1

1+(1/3-1/4)×1/2
=1+1/12x1/2
=1+1/24
=25/24
580÷｛185-（5＋ 170）｝
=580÷（185-175）
=580÷10
=58
3/5-3/5×5/7+2/7
=3/5-3/7+2/7
=3/5-（3/7-2/7）
=3/5-1/7
=21/35-5/35
=16/35