question_answer

                                                                                         Simplify : \[\frac{x}{2}-\frac{3x}{4}+\frac{5x}{6}=21\]

Answer:

\[\frac{x}{2}-\frac{3x}{4}+\frac{5x}{6}=21\]

or, \[\frac{6x-9x+10x}{12}=21\]

or,\[7x=21\times 12\]

or, \[x=\frac{21\times 12}{7}\]

or, x = 36