5х+3/5=х-5/8
3m+5/4=5m+1/3

5x-x=-3/5-5/84x=-3*8/40-5*5/404x=-24/40-25/404x=-49/40x=-49/40*4x=-49/1603m-5m=1/3-5/4-2m=4/12-5*3/12-2m=4/12-15/12-2m=-11/12m=11/12*2m=11/24