Contact us
Choose a category below so we can get back to you as quickly as possible.
15分之7x+18=三分之2x 2/3x-7/15x=18 1/5x=18 x=18x5 x=90 如果本題有什麼不明白可以追問,
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.