Đáp án+giải thích các bước giải:
⇒$\dfrac{1}{9}$ - ($\dfrac{1}{12}$ -2x):$\dfrac{75}{100}$ =$\dfrac{4}{3}$
⇒($\dfrac{1}{12}$ -2x):$\dfrac{75}{100}$ =$\dfrac{1}{9}$ -$\dfrac{4}{3}$
⇒($\dfrac{1}{12}$ -2x):$\dfrac{3}{4}$=$\dfrac{1}{9}$-$\dfrac{12}{9}$
⇒($\dfrac{1}{12}$ -2x):$\dfrac{3}{4}$=$\dfrac{-11}{9}$
⇒($\dfrac{1}{12}$ -2x)=$\dfrac{-11}{9}$×$\dfrac{3}{4}$
⇒$\dfrac{1}{12}$-2x=$\dfrac{-13}{36}$
⇒2x=$\dfrac{1}{12}$-$\dfrac{-13}{36}$
⇒2x=$\dfrac{1}{12}$+$\dfrac{13}{36}$
⇒2x=$\dfrac{3}{36}$+$\dfrac{13}{36}$
⇒2x=$\dfrac{4}{9}$
⇒x =$\dfrac{4}{9}$:2
⇒x =$\dfrac{4}{9}$×$\dfrac{1}{2}$
⇒x =$\dfrac{4}{18}$=$\dfrac{2}{9}$
