Sửa đề: \(\dfrac{x-2}{7}+\dfrac{x-1}{8}=\dfrac{x-4}{5}+\dfrac{x-3}{6}\)
=>\(\dfrac{x-2}{7}-1+\dfrac{x-1}{8}-1=\dfrac{x-4}{5}-1+\dfrac{x-3}{6}-1\)
=>x-9=0
=>x=9
Đúng 0
Bình luận (0)