Question

Предварительно СОКРАТИВ дроби найдите значение выражения 1) 10/24-21/54 2)28/40-10/75 3)14/24-15/42 4)4/24+2/36 Плиииз я на олимпиаде помогите

Answer 1

Незнаю можно ли выкладывать , но помогу......

Answer 2

Simplifying Fractions and Evaluating Expressions

To simplify fractions and evaluate the given expressions, let's start by simplifying each fraction and then perform the required operations.

1) Simplifying the fractions: - 10/24 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 2. This gives us 5/12. - 21/54 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 3. This gives us 7/18.

Now, let's evaluate the expression: - 1) 10/24 - 21/54 = 5/12 - 7/18

2) Simplifying the fractions: - 28/40 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 4. This gives us 7/10. - 10/75 is already in its simplest form.

Now, let's evaluate the expression: - 2) 28/40 - 10/75 = 7/10 - 10/75

3) Simplifying the fractions: - 14/24 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 2. This gives us 7/12. - 15/42 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 3. This gives us 5/14.

Now, let's evaluate the expression: - 3) 14/24 - 15/42 = 7/12 - 5/14

4) Simplifying the fractions: - 4/24 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 4. This gives us 1/6. - 2/36 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 2. This gives us 1/18.

Now, let's evaluate the expression: - 4) 4/24 + 2/36 = 1/6 + 1/18

Let's calculate the values of the expressions step by step.