Ответ:
Пошаговое объяснение:
-(5 4/9 - 6 5/12) + (-3 2/3 - 5/9) =
= -(49/9 - 77/12) + (-11/3 - 5/9) =
= -49/9 + 77/12 - 11/3 - 5/9 =
= (-49/9 - 5/9) +(77/12 - 11/
= -1/9 • (49+5) + 11/3 • (7/4 - 1) =
= -1/9 • 54 + 11/3 • (7/4 - 4/4) =
= -54/9 + 11/3 • 3/4 =
= -6 + 11/4 = -24/4 + 11/4 = -13/4 = - 3 1/4