\(12.120:\left[3\left(x-25\right)\right]=10\\ \Rightarrow1440:\left[3\left(x-25\right)\right]=10\\ \Rightarrow3\left(x-25\right)=144\\ \Rightarrow x-25=48\\ \Rightarrow x=73\)
Đúng 1
Bình luận (0)