Question

Решите уровнение 8 9\26 - Z = 5 7\39Помогите пожалосто у меня завтро контрольная мне нужно зарание это записать.!!!!!!!

Answer 1

8 9/26-5 7/39=Z
8 27/78-5 14/78=Z ( приводим к общему знаменателю... у 9/26 множитель 3, а у 7/39  множитель 2)
3 13/78=Z
3 1/6=Z

Answer 2

8 9\26 - Z = 5 7\39
217/26-z=202/39
z=202/39-  217/26
z=404/78-   651/78
z=-247/78
z=3   13/78
z=3    1/6

Answer 3

To solve the equation 8 + 9/26 - Z = 5 + 7/39, we can follow these steps:

Step 1: Combine like terms on both sides of the equation. - On the left side, we have 8 + 9/26 - Z. - On the right side, we have 5 + 7/39.

Step 2: Simplify the fractions. - To add or subtract fractions, we need to find a common denominator. - The common denominator for 26 and 39 is 26 * 39 = 1014. - So, we can rewrite the equation as follows: 8 * 1014/1014 + (9/26) * 39/39 - Z * 1014/1014 = 5 * 1014/1014 + (7/39) * 26/26.

Step 3: Perform the calculations. - On the left side, we have (8 * 1014 + 9 * 39 - Z * 1014)/1014. - On the right side, we have (5 * 1014 + 7 * 26)/1014.

Step 4: Simplify the equation. - Now, we have (8 * 1014 + 9 * 39 - Z * 1014)/1014 = (5 * 1014 + 7 * 26)/1014.

Step 5: Solve for Z. - To isolate Z, we can multiply both sides of the equation by 1014. - This will cancel out the denominators, leaving us with: 8 * 1014 + 9 * 39 - Z * 1014 = 5 * 1014 + 7 * 26.

Step 6: Simplify and solve for Z. - Expanding the equation, we have: 8 * 1014 + 9 * 39 - 1014 * Z = 5 * 1014 + 7 * 26.

- Combining like terms, we get: 8148 + 351 - 1014Z = 5070 + 182.

- Simplifying further, we have: 8499 - 1014Z = 5252.

- To solve for Z, we need to isolate it on one side of the equation. Subtracting 8499 from both sides, we get: -1014Z = 5252 - 8499.

- Simplifying the right side, we have: -1014Z = -3247.

- Finally, to solve for Z, we divide both sides by -1014: Z = -3247 / -1014.

- The value of Z is approximately 3.2.

Therefore, the solution to the equation 8 + 9/26 - Z = 5 + 7/39 is Z ≈ 3.2.