Question

8 17/20 - 6 7/10 1) 2 3/20 2) 2 10/10 3) 14 24/20 4) 6/8

Answer 1

Ответ:  2 3/20 або варіант 1

Пошаговое объяснение:

Answer 2

To subtract mixed numbers, you need to convert them to improper fractions and then perform the subtraction. Let's solve the expression step by step:

1. Convert the mixed numbers to improper fractions:

8 17/20 = (8 * 20 + 17)/20 = 177/20

6 7/10 = (6 * 10 + 7)/10 = 67/10

2. Subtract the fractions:

177/20 - 67/10

To subtract fractions with different denominators, you need to find a common denominator. In this case, the common denominator is 20.

Multiply the numerator and denominator of the first fraction (177/20) by 2 to get a common denominator of 20:

(177 * 2)/(20 * 2) = 354/40

Now subtract the fractions:

354/40 - 67/10

To subtract fractions with the same denominator, subtract the numerators and keep the common denominator:

354/40 - 67/10 = (354 - (67 * 4))/(40 * 2) = (354 - 268)/80 = 86/80

3. Simplify the fraction:

86/80 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 2:

86/80 = (43/40) / (2/2) = 43/40

4. Convert the improper fraction back to a mixed number:

43/40 = 1 3/40

So, the final result of the expression 8 17/20 - 6 7/10 is 1 3/40.

Among the given options, none of them matches the result.