Решите уравнение.
X:([tex] \frac{9}{3} [/tex] -- [tex] 1\frac{20}{51} [/tex]) = [tex]-2 \frac{1}{5} + \frac{5}{23} [/tex]

1) -2 1/5 +5/2 = - 1 6/5 + 5/23 = -1  (6*23 -5*5)/(5*23) = -1 113/115  или  -228/115 ;по другому :-(11/5 -5/23) = -(11*23 -5*5)/(5*23) = - 228/115 .2) 9/3 -1 20/51 = 2 51/51 -1 20/51= 1 31/51 = 82/51;3) x= 82/51 * (- 228/115) ;x = - (82*228)/ (51*115) = - 18696/ 5865.  [-3 1001/5865 ] .