7/11×4又14/19+5又5/19÷1又4/7+7/11 求简算

问题描述:

7/11×4又14/19+5又5/19÷1又4/7+7/11 求简算

7/11×4又14/19+5又5/19×7/11+7/11
=7/11*(4又14/19+5又5/19)+7/11
=7/11*10+7/11
=7/11*(10+1)
=7