б) -3 7/12-x=2 13/15 Вычислите пж.

...х=(-3 7/12) - 2 13/15х = (- 3 (7*15)/(12*15)) - 2 (13*12)/(15*12)х = (-3 105/180) - 2 156/180х = (-5  261/180)х = (-6  81/180)х = (-6 (81:9)/(180:9))х= (-6 9/20)