Question

7/15-8/25 2/21+9/14 ​

Answer 1

Ответ:

,6"*:9,6'4*7,&,77(;9:76'4'5"^:(;9;9;9*9*87$$ 8/6/ctcuvkvjz

Answer 2

Ответ:

11/15<31/42 как я поняла, это надо сравнить

Answer 3

Let's simplify the expression step by step:

1. Subtract the fractions 7/15 and 8/25:

   (7/15) - (8/25)

   To subtract these fractions, we need to find a common denominator. The least common denominator (LCD) for 15 and 25 is 75. So, we'll rewrite both fractions with a denominator of 75:

   (7/15) * (5/5) - (8/25) * (3/3)

   Now, the fractions have a common denominator of 75:

   (35/75) - (24/75)

2. Subtract the fractions with the common denominator:

   (35/75) - (24/75)

   Now that the denominators are the same, you can directly subtract the numerators:

   (35 - 24)/75 = 11/75

3. Next, add the fractions 2/21 and 9/14:

   (2/21) + (9/14)

   To add these fractions, we need to find a common denominator. The least common denominator (LCD) for 21 and 14 is 42. So, we'll rewrite both fractions with a denominator of 42:

   (2/21) * (2/2) + (9/14) * (3/3)

   Now, the fractions have a common denominator of 42:

   (4/42) + (27/42)

4. Add the fractions with the common denominator:

   (4/42) + (27/42)

   Now that the denominators are the same, you can directly add the numerators:

   (4 + 27)/42 = 31/42

So, the final result of the expression is:

11/75 + 31/42