Question

9 7/10минус5,92минус 3 9/20

Answer 1

Тогда, думаю, будет так

Answer 2

To perform the subtraction of these mixed numbers, we'll need to convert them into improper fractions first, and then carry out the subtraction.

Let's start with each number:

1. 9 7/10: To convert this to an improper fraction, multiply the whole number (9) by the denominator of the fraction (10) and add the numerator (7) to get the new numerator. The denominator remains the same.

9 7/10 = (9 * 10 + 7)/10 = 97/10

2. 5.92: Since this is already a decimal, we can leave it as is.

3. 3 9/20: To convert this to an improper fraction, perform the same process as in step 1:

3 9/20 = (3 * 20 + 9)/20 = 69/20

Now, the original expression becomes:

97/10 - 5.92 - 69/20

To subtract these fractions, we need to have a common denominator. The common denominator for 10 and 20 is 20. Let's convert each fraction to have a denominator of 20:

97/10 = (97/10) * (2/2) = 194/20

69/20 = (69/20) * (1/1) = 69/20

Now the expression becomes:

194/20 - 5.92 - 69/20

Now, we can subtract the fractions:

194/20 - 69/20 = (194 - 69)/20 = 125/20 = 6 1/4

So, the final result is:

6 1/4 - 5.92

To subtract these, convert 5.92 to a fraction with a denominator of 4:

5.92 = 5 92/100 = 5 23/25 = (5 * 25 + 23)/25 = 148/25

Now the expression becomes:

6 1/4 - 148/25

To subtract these, once again, we need to have a common denominator. The common denominator for 4 and 25 is 100. Let's convert each fraction to have a denominator of 100:

6 1/4 = (6 * 25 + 1)/100 = 151/100

148/25 = (148/25) * (4/4) = 592/100

Now the expression becomes:

151/100 - 592/100

Now we can subtract the fractions:

151/100 - 592/100 = (151 - 592)/100 = -441/100

Finally, let's convert -441/100 back to a mixed number:

-441/100 = -4 41/100

So, the result of the subtraction is:

-4 41/100