Question

(-8 septimos -3 quintos )÷[4 quince avos+(-2tercios)]

Answer 1

( -8/7 -3/5)  : (4/15 + (-2/3))

Aplicamos m.c.m

(-40/35 - 21/5) : ( 4/15 - 2/3)

-19/35 : ( 4/15 - 10/15)

-19/35 :  (-6/15) = - 285/-210 = 285/210

saludos