（35+7/15）÷7/5
=（35+7/15）×5/7
=35×5/7+7/15×5/7
=25+1/3
=25 1/3 (25右三分之一)还有呢，不要方程45又15/16÷5=（45+15/16）÷5=45÷5+15/16÷5=9+3/16=9右3/16 8/17÷23+1/23×9/17= 8/17×1/23+1/23×9/17=1/23×（8/17+9/17）=1/235÷（5/11+5/9）=5÷5/11+5÷5/9=11+9=20 答了那么多。采纳啊~