المعادلات

المعادلة الأولى

$\displaystyle {\textstyle\frac{3}{4}}$ x + $\displaystyle {\textstyle\frac{5}{6}}$ = 5x - $\displaystyle {\textstyle\frac{125}{3}}$

12 $\displaystyle \left(\vphantom{\frac{3}{4}x+\frac{5}{6}}\right.$ $\displaystyle {\textstyle\frac{3}{4}}$ x + $\displaystyle {\textstyle\frac{5}{6}}$ $\displaystyle \left.\vphantom{\frac{3}{4}x+\frac{5}{6}}\right)$ = 12 $\displaystyle \left(\vphantom{5x-\frac{125}{3}}\right.$ 5x - $\displaystyle {\textstyle\frac{125}{3}}$ $\displaystyle \left.\vphantom{5x-\frac{125}{3}}\right)$

12 $\displaystyle \left(\vphantom{\frac{3}{4}x}\right.$ $\displaystyle {\textstyle\frac{3}{4}}$ x $\displaystyle \left.\vphantom{\frac{3}{4}x}\right)$ + 12 $\displaystyle \left(\vphantom{\frac{5}{6}}\right.$ $\displaystyle {\textstyle\frac{5}{6}}$ $\displaystyle \left.\vphantom{\frac{5}{6}}\right)$ = 12(5x) - 12 $\displaystyle \left(\vphantom{\frac{125}{3}}\right.$ $\displaystyle {\textstyle\frac{125}{3}}$ $\displaystyle \left.\vphantom{\frac{125}{3}}\right)$