Question

20-18,6:(6 11/15-4,15)

Answer 1

20-18,6:(6 11/15-4 3/20)=  

(6 11/15-4 3/20)=101\15-83\20=404\60-249\60=155\60

20-18,6:155\60=20-18,6*60\155=20-1116\155=20-7,2=12,8

Answer 2

Let's break down the expression step by step:

1. 20 - 18 = 2
2. 6:(6 11/15 - 4 15/1)

Now, let's simplify the fraction inside the parentheses first:

6 11/15 - 4 15/1

To subtract mixed numbers, we need to convert them into improper fractions:

6 11/15 = (6 * 15 + 11) / 15 = 101/15 4 15/1 = (4 * 1 + 15) / 1 = 19/1

Now, subtract the fractions:

101/15 - 19/1

To subtract fractions, they need to have a common denominator. The common denominator here is 15, so we convert 19/1 into a fraction with denominator 15:

19/1 * 15/15 = 285/15

Now, we can subtract the fractions:

101/15 - 285/15 = (101 - 285) / 15 = -184/15

Now, the expression becomes:

6: (-184/15)

To divide a number by a fraction, we multiply the number by the reciprocal of the fraction. The reciprocal of -184/15 is -15/184:

6 * (-15/184) = -90/184

Now, we can simplify the fraction -90/184 by dividing both the numerator and denominator by their greatest common divisor (GCD), which is 2:

-90/184 = (-90 ÷ 2) / (184 ÷ 2) = -45/92

So, the final result of the expression is -45/92.