Contact us
Choose a category below so we can get back to you as quickly as possible.
1)a>c,--> 10+c-a=6--> a-c=4 2)10+b+1-b=9-->b可以為任意自然數 3)a-1-c=3-->a-c=3集合1),那麼只要a-c=4就行,a>5,c>1. 比如602-406=396;591-195=396;915-519=396等.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.