(x+2)/(x+1)+(x+4)/(x+3)-(x+3)/(x+2)+(x+5)/(x+4)= 明天开学
问题描述:
(x+2)/(x+1)+(x+4)/(x+3)-(x+3)/(x+2)+(x+5)/(x+4)= 明天开学
答
(2x+7)╱(x+1)
(x+2)/(x+1)+(x+4)/(x+3)-(x+3)/(x+2)+(x+5)/(x+4)= 明天开学
(2x+7)╱(x+1)