Question

x+3/6 + 6-x/21 = x+7/14​

Answer 1

$x - \frac{3}{6} + 6 - \frac{x}{21} = x + \frac{7}{14} \\ \frac{3}{6} + 6 - \frac{x}{21} = \frac{7}{14} \\ \frac{13}{2} - \frac{x}{21} = \frac{7}{14} \\ 273 - 2x = 21 \\ 2x =273 - 21 \\ 2x = 252 \\x = 252 \div 2 \\ x = 126$