Question

7-102:(9a+7)=173/173знаменатель 4​

Answer 1

Ответ:

7-102/(9а+7)/4=7/7

7-102/(9а+7)=4

102/(9а+7)=3

 

9а+7=102/3

9а+7=34

9а+27

а=27/9

а=3

Пошаговое объяснение:

надеюсь это то

Answer 2

It looks like you've written a mathematical expression, but there seems to be a mix of symbols and numbers. I'll try to interpret and solve it for you. If I understand correctly, you have the expression:

$7 - 102 \cdot \frac{9a + 7}{173} = \frac{173}{173 \cdot 4}$

Let's solve this step by step:

1. Simplify the right side of the equation:

$\frac{173}{173 \cdot 4} = \frac{1}{4}$

Now, the equation becomes:

$7 - 102 \cdot \frac{9a + 7}{173} = \frac{1}{4}$

2. Multiply both sides of the equation by 4 to eliminate the fraction:

$4 \cdot \left(7 - 102 \cdot \frac{9a + 7}{173}\right) = 1$

3. Distribute the 4 on the left side:

$28 - 408 \cdot \frac{9a + 7}{173} = 1$

4. Move the constant term to the other side:

$- 408 \cdot \frac{9a + 7}{173} = 1 - 28$

5. Combine like terms:

$- 408 \cdot \frac{9a + 7}{173} = -27$

6. Divide by -408 to isolate the fraction:

$\frac{9a + 7}{173} = \frac{-27}{-408}$

7. Simplify the right side:

$\frac{9a + 7}{173} = \frac{1}{15}$

Now, you can solve for $a$ by multiplying both sides by 173:

$9a + 7 = \frac{173}{15}$

8. Subtract 7 from both sides:

$9a = \frac{173}{15} - 7$

9. Divide by 9 to solve for $a$:

$a = \frac{\frac{173}{15} - 7}{9}$

You can now calculate this expression to find the value of $a$.