Question

4) -15 4/5- (-20 3/5) 6)16/21 - 5 1/3​

Answer 1

Ответ:

4)-15 4/5 -(-20 3/5) = -79/5 + 20 3/5 = - 79/5 + 103/5 = 24/5

6)16/21-5 1/3 = 16/24-16/3 = 14/3

Answer 2

Ответ:4)-15 4/5 -(-20 3/5) = -79/5 + 20 3/5 = - 79/5 + 103/5 = 24/5

6)16/21-5 1/3 = 16/24-16/3 = 14/3

Пошаговое объяснение:

Answer 3

4) -15 + 4/5 - (-20 + 3/5) + 6 First, let's simplify the expression within the parentheses: -(-20 + 3/5) = 20 - 3/5 Now the expression becomes: -15 + 4/5 - (20 - 3/5) + 6 Next, we can simplify the expression within the parentheses by distributing the negative sign: -15 + 4/5 - 20 + 3/5 + 6 Now we can add and subtract the numbers: -15 - 20 + 6 + 4/5 + 3/5 -29 + 6 + 7/5 -23 + 7/5 Finally, we can add the whole number and the fraction: -23 + 7/5 = -23 + 1 2/5 = -21 2/5

6) 16/21 + 5 + 1/3 First, let's convert the mixed number to an improper fraction: 5 + 1/3 = 5 + 3/3 = 5 3/3 = 5 1 Now we can add the fractions and the whole numbers: 16/21 + 5 1 To add the whole number and the fraction, we need to convert the whole number to a fraction with the same denominator as the first fraction: 5 = 5/1 Now the expression becomes: 16/21 + 5/1 To add the fractions, we need to find a common denominator, which in this case is 21: 16/21 + 105/21 Now we can add the fractions: 16/21 + 105/21 = 121/21 Finally, we can simplify the fraction: 121/21 = 5 16/21

So, the final answers are: 4) -21 2/5 6) 5 16/21