Question

\(\dfrac{12x+1}{11x-4}+\dfrac{10x-4}{9}=\dfrac{20x+17}{18}\)

Answer 1

ĐKXĐ x\(\ne\) \(\dfrac{4}{11}\)

\(\Rightarrow\left(12x+1\right)18+\left(10x-4\right)\left(11x-4\right)2=\left(20x+17\right)\left(11x-4\right)\)

\(\Leftrightarrow216x+18+\left(110x^2-40x-44x+16\right)2=220x^2-80x+187x-68\)

\(\Leftrightarrow216x+18+220x^2-168x+32=220x^2+107x-68\Leftrightarrow220x^2-48x+50=220x^2+107x-68\Leftrightarrow220x^2+107x+48x-220x^2=50+68\Leftrightarrow155x=138\Leftrightarrow x=\dfrac{138}{155}\left(TM\right)\)Vậy...