Question

(20 1/5-11 2/15)-6 1/3

Answer 1

1) 20 1/5-11 2/15=20 3/15-11 2/15=9 1/15
2) 9 1/15-6 1/3=9 1/15-6 5/15=-3 4/15
(20 1/5-11 2/15)-6 1/3=-3 4/15

Answer 2

To calculate the expression (20 1/5 - 11 2/15) - 6 1/3, let's break it down step by step:

1. Convert the mixed numbers to improper fractions: 20 1/5 = (20 * 5 + 1) / 5 = 101 / 5 11 2/15 = (11 * 15 + 2) / 15 = 167 / 15 6 1/3 = (6 * 3 + 1) / 3 = 19 / 3

2. Subtract the second fraction from the first: (101/5) - (167/15) = (101 * 3 - 167) / 15 = (303 - 167) / 15 = 136 / 15

3. Subtract the third fraction from the result of step 2: (136/15) - (19/3) = (136 * 3 - 19 * 15) / 15 = (408 - 285) / 15 = 123 / 15

The fraction 123/15 can be simplified by finding the greatest common divisor (GCD) of 123 and 15, which is 3. Dividing both the numerator and the denominator by 3:

123 / 15 = (123 / 3) / (15 / 3) = 41 / 5

So, the result of the expression is 41/5 or 8 1/5.