4 3\4+(х-5.7)=5 7\8 решите

4 3/4 + (х - 5,7) = 5 7/8;

(4 * 4 + 3)/4 + х - 57/10 = (5 * 8 + 7)/8;

(16 + 3)/4 + х - 57/10 = (40 + 7)/8;

19/4 + х - 57/10 = 47/8;

х = 47/8 - 19/4 + 57/10 = 47/8 - 38/8 + 57/10 = 9/8 + 57/10 = 90/80 + 456/80 = (90 + 456)/80 = 546/80 = 273/40 = 6,825.

Ответ: х = 6,825.