4分之5-7分之6+14分之3x3分之2
问题描述:
4分之5-7分之6+14分之3x3分之2
答
4分之5-7分之6+14分之3x3分之2
=5/4-6/7+1/7
=5/4-(6/7-1/7)
=5/4-5/7
=15/28