= 6, 15 + (-6 + 1/30) + 3/2= 6, 15 + (-6 + 1/30) + 3/2= 6, 15 + (-6 + 0.033) + 0.1= 6, 15 - 5.967 + 0.1= 6, 15 - 5.81= 6, 9.183
So, 6, 15 + (-6 1/30) + 3/20 = 6, 9.183
= 6, 15 + (-6 + 1/30) + 3/2
= 6, 15 + (-6 + 1/30) + 3/2
= 6, 15 + (-6 + 0.033) + 0.1
= 6, 15 - 5.967 + 0.1
= 6, 15 - 5.81
= 6, 9.183
So, 6, 15 + (-6 1/30) + 3/20 = 6, 9.183