Arjun used the commutative property to simplify this expression with mixed numbers. 5 and StartFraction 5 over 6 EndFraction + 2 and two-thirds + negative one-sixth minus 2 and two-thirds = 5 and StartFraction 5 over 6 EndFraction + (negative one-sixth) + 2 and two-thirds + (negative 2 and two-thirds). What is the final answer?

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.