Question

operacines combinadas -3/7-4/9.5/6

Answer 1

-3/7-4/9(5/6)
= -3/7-(4)(5)/(9)(6)
=-3/7 - 20/54
=-3/7 -10/27
= (-3x27-7x10)/(7)(27)
= -81-70/189
= -151/189