Contact us
Choose a category below so we can get back to you as quickly as possible.
x/0.3-(0.03+0.05x)/0.02+4=0 10x/3-(3+5x)/2+4=0 兩邊同乘以6,得 20x-3(3+5x)+24=0 20x-9-15x+24=0 5x+15=0 5x=-15 x=-3
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.