Question

tìm x
a) x-2/x-1 = x+4/x+7
b) x-18/x+4 = x-17/x+16

Answer 1

a: Ta có: \(\dfrac{x-2}{x-1}=\dfrac{x+4}{x+7}\)

\(\Leftrightarrow x^2+5x-10=x^2+3x-4\)

\(\Leftrightarrow2x=6\)

hay x=3