Contact us
Choose a category below so we can get back to you as quickly as possible.
負四乘負二四乘二負一乘負八一乘八
設這個數為x則x+(-15/12)=負九x-15/12=-9 x=-9+15/12 x=-7.75
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.