Question

А)2 15/15+×/15=3 8/15 Б)(17/31-×)-8/31=2/31

Answer 1

Ответ:

豆腐の出前（藤原家）201250

Пошаговое объяснение:

Негр

Answer 2

To solve the given equations, let's simplify and solve each equation step by step:

A) 2 15/15 + ×/15 = 3 8/15

To simplify the equation, we need to convert the mixed numbers into improper fractions:

2 15/15 + ×/15 can be written as (2 × 15 + 15) / 15.

This simplifies to (30 + ×) / 15.

Now, we have the equation: (30 + ×) / 15 = 3 8/15.

To eliminate the fraction, we can multiply both sides of the equation by 15:

15 * (30 + ×) / 15 = 15 * (3 8/15).

This simplifies to 30 + × = 3 * 15 + 8.

30 + × = 45 + 8.

Combine like terms:

× = 53 - 30.

× = 23.

Therefore, the value of × is 23.

B) (17/31 - ×) - 8/31 = 2/31

Let's simplify the equation by combining like terms:

(17/31 - ×) - 8/31 = 2/31.

We can combine the fractions on the left side:

(17 - 31× - 8) / 31 = 2/31.

Combine like terms:

(17 - 8 - 31×) / 31 = 2/31.

9 - 31× / 31 = 2/31.

To eliminate the fraction, we can multiply both sides by 31:

31 * (9 - 31×) / 31 = 31 * (2/31).

This simplifies to 9 - 31× = 2.

Move the constant term to the right side:

-31× = 2 - 9.

-31× = -7.

Divide both sides by -31:

× = -7 / -31.

Simplify the fraction:

× = 7/31.

Therefore, the value of × is 7/31.