Đáp án:
Giải thích các bước giải:
$\dfrac{9}{2}$$+(x-$$\dfrac{3}{4}$)$=$$\dfrac{24}{5}$
$x-\dfrac{3}{4}=\dfrac{24}{5}-\dfrac{9}{2}$
$x-\dfrac{3}{4}=\dfrac{96}{20}-\dfrac{90}{20}$
$x-\dfrac{3}{4}=\dfrac{6}{20}$
$x=\dfrac{6}{20}+\dfrac{3}{4}$
$x=\dfrac{6}{20}+\dfrac{15}{20}$
$x=\dfrac{21}{20}$