Question

5) 12/27 + 14/21=4/9+2/3=4+6/9=10/9=1 1/9 6) 14/24-15/40=7/12 - 3/8=14/9/24=5/24 7)12/18-5/60=2/3-1/12=8-1/12=7/12 8) 4/24+3/36=1/6+1/12=2+1/12=3/12=1/4

Answer 1

Ну а разве это не ответ?

Answer 2

Let's check your calculations:

5. 12/27 + 14/21: To add these fractions, you need to find a common denominator, which is 27 for both fractions. (12/27) + (14/21) = (12/27) + (14/21) * (3/3) = (12/27) + (42/63)

   Now, both fractions have the same denominator, so you can add them: (12/27) + (42/63) = (12/27) + (42/63) * (9/9) = (12/27) + (378/567)

   Now, you can add the fractions: (12/27) + (378/567) = (144/324) + (378/567)

   Simplify both fractions: (144/324) + (378/567) = (4/9) + (2/3)

   Now, add them: (4/9) + (2/3) = (4/9) + (6/9)

   Now, the denominators are the same, so you can add the numerators: (4/9) + (6/9) = (4 + 6)/9 = 10/9

   This simplifies to 1 1/9.

6. 14/24 - 15/40: To subtract these fractions, you need to find a common denominator, which is 120 for both fractions. (14/24) - (15/40) = (14/24) * (5/5) - (15/40) * (3/3) = (70/120) - (45/120)

   Now, both fractions have the same denominator, so you can subtract them: (70/120) - (45/120) = (70 - 45)/120 = 25/120

   Simplify the fraction: 25/120 = 5/24

7. 12/18 - 5/60: To subtract these fractions, you need to find a common denominator, which is 180 for both fractions. (12/18) - (5/60) = (12/18) * (10/10) - (5/60) * (3/3) = (120/180) - (15/180)

   Now, both fractions have the same denominator, so you can subtract them: (120/180) - (15/180) = (120 - 15)/180 = 105/180

   Simplify the fraction: 105/180 = 7/12

8. 4/24 + 3/36: To add these fractions, you need to find a common denominator, which is 72 for both fractions. (4/24) + (3/36) = (4/24) * (3/3) + (3/36) * (2/2) = (12/72) + (6/72)

   Now, both fractions have the same denominator, so you can add them: (12/72) + (6/72) = (12 + 6)/72 = 18/72

   Simplify the fraction: 18/72 = 1/4

Your calculations are mostly correct, but there were some errors in the intermediate steps. The correct results are as shown above.