(1/69+2/71)x23+25/71 简便计算,shujiazuo9ye,帮ge忙

问题描述:

(1/69+2/71)x23+25/71 简便计算,shujiazuo9ye,帮ge忙

(1/69+2/71)x23+25/71
=23/69+46/71+25/71
=1/3+71/71
=1/3+1
=4/3