Question

x + 5 7/12= 6 3/8 + 2 5/6

Answer 1

x + 5 7/12= 6 3/8 + 2 5/6 
x + 5 7/12 = 6 9/24 + 2 20/24
x + 5 14/24 = 8 29/24
x = 8 29/24 - 5 14/24
x = 3 15/24
x = 3 5/8 

Answer 2

X +5$frac{7}{12}$ = 6$frac{3}{8}$ + 2$frac{5}{6}$    
X = 6$frac{9}{24}$ + 2$frac{20}{24}$ - 5$frac{14}{24}$           
X = 3$frac{9+20-14}{24}$        
X = 3$frac{15}{24}$       
X = 3$frac{5}{8}$       
X = 3,625
Ответ: X=3,625