{[(+4/25)+36/13]-[7/26+4/9]}÷105/22×21/11
问题描述：
{[(+4/25)+36/13]-[7/26+4/9]}÷105/22×21/11
答
把{[(+4/25)+36/13]-[7/26+4/9]}÷105/22×21/11 先化简为（4/25+36/13-7/26-4/9）x22/105x21/11=(4/25+72/26-7/26-4/9)x2/5=(4/25+65/26-4/9)x2/5=(4/25-4/9)x2/5+65/26x2/5=(4/25-4/9)x2/5+1=97/225