C+d-8,3
Substitute c=9 4/5 and d=-1 9/20 into the equation:
9 4/5 + (-1 9/20) - 8.3
Convert mixed fractions to improper fractions:
9 4/5 = (95 + 4)/5 = 49/5-1 9/20 = (-120 + 9)/20 = -31/20
Substitute back into the equation:
49/5 - 31/20 - 8.3
Find a common denominator for 5 and 20, which is 20:
(49*4)/20 - 31/20 - 8.3196/20 - 31/20 - 8.3
Combine like terms:
(196 - 31)/20 - 8.3165/20 - 8.3
Convert the fraction to a mixed number:
165 ÷ 20 = 8 with a remainder of 5
So, the final answer is:
8 5/20 - 8.38 1/4 - 8.3 = -0.05
C+d-8,3
Substitute c=9 4/5 and d=-1 9/20 into the equation:
9 4/5 + (-1 9/20) - 8.3
Convert mixed fractions to improper fractions:
9 4/5 = (95 + 4)/5 = 49/5
-1 9/20 = (-120 + 9)/20 = -31/20
Substitute back into the equation:
49/5 - 31/20 - 8.3
Find a common denominator for 5 and 20, which is 20:
(49*4)/20 - 31/20 - 8.3
196/20 - 31/20 - 8.3
Combine like terms:
(196 - 31)/20 - 8.3
165/20 - 8.3
Convert the fraction to a mixed number:
165 ÷ 20 = 8 with a remainder of 5
So, the final answer is:
8 5/20 - 8.3
8 1/4 - 8.3 = -0.05