(65/7+65/9)÷(5/7+5/9)脱式计算,能简算要简算,
问题描述:
(65/7+65/9)÷(5/7+5/9)脱式计算,能简算要简算,
答
(65/7+65/9)÷(5/7+5/9) =[65(1/7+1/9)]÷[5(1/7+1/9)] =65/5 =13
(65/7+65/9)÷(5/7+5/9)脱式计算,能简算要简算,
(65/7+65/9)÷(5/7+5/9) =[65(1/7+1/9)]÷[5(1/7+1/9)] =65/5 =13