If the signs of the fraction -a+2b over 2x-y are changed, how is it written and what would be the equivalent fraction?

Question

jhonyy9 · Answer

if you have thought hence          -a+2b
                                        (+)  ------ so if this sign (+) will be changed in (-) your  
                                                2x-y

                             -a+2b       a-2b
fraction will be  (-) ------- = ------ 
                              2x-y         2x-y