Question

решите дроби 7/15+8/15          35/78-26/78           124/150-20/150      90/150+30/150         1-8/80    1-28/60          105/300+120/300        120/300-40/300        235/300-60/300      38/80-8/80

Answer 1

To solve the given fractions, let's perform the calculations step by step:

1. 7/15 + 8/15: - When adding fractions with the same denominator, you simply add the numerators and keep the denominator the same. - In this case, the denominator is 15, so the sum of the numerators is 7 + 8 = 15. - Therefore, the result is 15/15.

2. 35/78 - 26/78: - When subtracting fractions with the same denominator, you subtract the numerators and keep the denominator the same. - In this case, the denominator is 78, so the difference of the numerators is 35 - 26 = 9. - Therefore, the result is 9/78.

3. 124/150 - 20/150: - Again, when subtracting fractions with the same denominator, you subtract the numerators and keep the denominator the same. - In this case, the denominator is 150, so the difference of the numerators is 124 - 20 = 104. - Therefore, the result is 104/150.

4. 90/150 + 30/150: - When adding fractions with the same denominator, you simply add the numerators and keep the denominator the same. - In this case, the denominator is 150, so the sum of the numerators is 90 + 30 = 120. - Therefore, the result is 120/150.

5. 1 - 8/80: - To subtract a fraction from a whole number, you need to convert the whole number into a fraction with the same denominator as the fraction. - In this case, the denominator is 80, so the whole number 1 can be written as 80/80. - Now, you can subtract the fractions: 80/80 - 8/80 = 72/80. - Therefore, the result is 72/80.

6. 1 - 28/60: - Similar to the previous step, convert the whole number 1 into a fraction with the same denominator as the fraction. - In this case, the denominator is 60, so 1 can be written as 60/60. - Now, subtract the fractions: 60/60 - 28/60 = 32/60. - Therefore, the result is 32/60.

7. 105/300 + 120/300: - When adding fractions with the same denominator, you simply add the numerators and keep the denominator the same. - In this case, the denominator is 300, so the sum of the numerators is 105 + 120 = 225. - Therefore, the result is 225/300.

8. 120/300 - 40/300: - When subtracting fractions with the same denominator, you subtract the numerators and keep the denominator the same. - In this case, the denominator is 300, so the difference of the numerators is 120 - 40 = 80. - Therefore, the result is 80/300.

9. 235/300 - 60/300: - Again, when subtracting fractions with the same denominator, you subtract the numerators and keep the denominator the same. - In this case, the denominator is 300, so the difference of the numerators is 235 - 60 = 175. - Therefore, the result is 175/300.

10. 38/80 - 8/80: - When subtracting fractions with the same denominator, you subtract the numerators and keep the denominator the same. - In this case, the denominator is 80, so the difference of the numerators is 38 - 8 = 30. - Therefore, the result is 30/80.

Now you have the solutions for all the given fractions.