-2 4/15+(-5 1/6)+2,1

Interpretation: -2 4/15 + (-5 1/6) + 2.1

• -2 4/15 = - (2 + 4/15) = -34/15
• -5 1/6 = -31/6
• 2.1 = 21/10

Sum with common denominator 30: -34/15 = -68/30 -31/6 = -155/30 21/10 = 63/30

Total = (-68 - 155 + 63) / 30 = -160/30 = -16/3 = -5 1/3

Answer: -16/3 (which is -5 1/3), approximately -5.333...