-0.6+(-2/3)+2/15

(-15.4+11.3)+-12.4

-0.6+(-2/3)+2/15= -3/5 - 2/3 + 2/15 = -9/15 - 10/15 + 2/15 = -17/15 = 1 2/15(-15.4+11.3)+-12.4 = -15,4+11,3-12,4= -16,5