Question

3/4+(2-32/21):4/9-11/7

Answer 1

Ответ:1/4

Если предпочтение отдаете десятичным дробям, то о,25

Пошаговое объяснение:

1)2-32/21=42/21-32/21=10/21

2)(10/21)/(4/9)=(10/21)*(9/4)=15/14

3)3/4+15/14=51/28

4)51/28-11/7=51/28-44/28=7/28=1/4

Answer 2

To solve this expression, we need to follow the order of operations (also known as PEMDAS) which is Parentheses, Exponents, Multiplication and Division, and finally Addition and Subtraction, as follows:

1. Solve the expression inside the parentheses:

   2 - 32/21 = 10/21 - 32/21 = -22/21

2. Add the fractions:

   3/4 + (-22/21)

   To add fractions with different denominators, we need to find a common denominator first. The least common multiple (LCM) of 4 and 21 is 84, so we can rewrite the fractions with a common denominator of 84:

   3/4 * 21/21 + (-22/21) * 4/4

   = 63/84 - 88/84

   = -25/84

3. Subtract the fractions:

   4/9 - 11/7

   Again, we need to find a common denominator, which is 63.

   4/9 * 7/7 - 11/7 * 9/9

   = 28/63 - 99/63

   = -71/63

Therefore, the final answer is:

-25/84 - 71/63

To add or subtract fractions with different denominators, we need to find a common denominator, which is the LCM of the denominators. In this case, the LCM of 84 and 63 is 252, so we can rewrite the fractions with a common denominator of 252:

-25/84 - 71/63 = -75/252 - 284/252 = -359/252.

So the final answer is -359/252.